📝 PM Review: Perimeter and Area

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Question 1 Difficulty 1
What is the formula to calculate the area of a rectangle?
  • A length + width
  • B length × width
  • C length - width
  • D 2 × (length + width)
💡 Explanation The area of a rectangle is calculated using the formula Area = length × width.
Question 2 Difficulty 1
If a square has a side length of 5m, what is its area?
  • A 10m²
  • B 20m²
  • C 25m²
  • D 30m²
💡 Explanation The area of a square is calculated using the formula Area = side × side. Here, Area = 5m × 5m = 25m².
Question 3 Difficulty 1
What is the area of a triangle with a base of 4m and height of 3m?
  • A 6m²
  • B 12m²
  • C 9m²
  • D 8m²
💡 Explanation The area of a triangle is calculated using the formula Area = ½ × base × height. Here, Area = ½ × 4m × 3m = 6m².
Question 4 Difficulty 1
How do you calculate the area of a circle?
  • A π × diameter
  • B π × radius
  • C π × radius²
  • D 2 × π × radius
💡 Explanation The area of a circle is calculated using the formula Area = π × radius².
Question 5 Difficulty 1
What is the area of a square with a side of 6cm?
  • A 12cm²
  • B 24cm²
  • C 36cm²
  • D 48cm²
💡 Explanation The area of a square is calculated using the formula Area = side × side. Here, Area = 6cm × 6cm = 36cm².
Question 6 Difficulty 1
If a rectangle has a length of 8m and a width of 2m, what is its area?
  • A 10m²
  • B 16m²
  • C 12m²
  • D 20m²
💡 Explanation The area of the rectangle is calculated as Area = length × width = 8m × 2m = 16m².
Question 7 Difficulty 1
How do you find the area of a parallelogram?
  • A base × height
  • B base + height
  • C (base × height) ÷ 2
  • D 2 × (base + height)
💡 Explanation The area of a parallelogram is calculated using the formula Area = base × height.
Question 8 Difficulty 1
What is the area of a triangle with a base of 10m and height of 5m?
  • A 15m²
  • B 25m²
  • C 30m²
  • D 20m²
💡 Explanation The area of the triangle is calculated as Area = ½ × base × height = ½ × 10m × 5m = 25m².
Question 9 Difficulty 1
If a circle has a radius of 4m, what is its area (use π ≈ 3.14)?
  • A 25.12m²
  • B 50.24m²
  • C 12.56m²
  • D 31.36m²
💡 Explanation The area of the circle is calculated as Area = π × radius² = 3.14 × (4m)² = 3.14 × 16 = 50.24m².
Question 10 Difficulty 1
What is the area of a rectangle that is 12m long and 4m wide?
  • A 16m²
  • B 48m²
  • C 36m²
  • D 24m²
💡 Explanation The area of the rectangle is calculated as Area = length × width = 12m × 4m = 48m².
Question 11 Difficulty 2
A rectangular field is 30m long and 20m wide. What is its area?
  • A 600m²
  • B 500m²
  • C 700m²
  • D 450m²
💡 Explanation The area is calculated as Area = length × width = 30m × 20m = 600m².
Question 12 Difficulty 2
What is the area of a square with a side length of 8m?
  • A 32m²
  • B 64m²
  • C 48m²
  • D 80m²
💡 Explanation The area is calculated as Area = side × side = 8m × 8m = 64m².
Question 13 Difficulty 2
Calculate the area of a triangle with a base of 9m and a height of 4m.
  • A 18m²
  • B 24m²
  • C 36m²
  • D 12m²
💡 Explanation The area is calculated as Area = ½ × base × height = ½ × 9m × 4m = 18m².
Question 14 Difficulty 2
What is the area of a circle with a radius of 5m (use π ≈ 3.14)?
  • A 25m²
  • B 78.5m²
  • C 31.4m²
  • D 15.7m²
💡 Explanation The area is calculated as Area = π × radius² = 3.14 × (5m)² = 3.14 × 25 = 78.5m².
Question 15 Difficulty 2
If a rectangle has an area of 36m² and a width of 6m, what is its length?
  • A 4m
  • B 6m
  • C 8m
  • D 5m
💡 Explanation Using the area formula, Area = length × width, we can find length = Area ÷ width = 36m² ÷ 6m = 6m.
Question 16 Difficulty 2
What is the area of a parallelogram with a base of 8m and a height of 5m?
  • A 30m²
  • B 40m²
  • C 50m²
  • D 20m²
💡 Explanation The area is calculated as Area = base × height = 8m × 5m = 40m².
Question 17 Difficulty 2
A triangle has a base of 12m and a height of 10m. What is its area?
  • A 60m²
  • B 80m²
  • C 100m²
  • D 120m²
💡 Explanation The area is calculated as Area = ½ × base × height = ½ × 12m × 10m = 60m².
Question 18 Difficulty 2
What will be the area of a square with a side length of 7cm?
  • A 49cm²
  • B 42cm²
  • C 56cm²
  • D 63cm²
💡 Explanation The area is calculated as Area = side × side = 7cm × 7cm = 49cm².
Question 19 Difficulty 2
What is the area of a circle with a radius of 10cm (use π ≈ 3.14)?
  • A 314cm²
  • B 3140cm²
  • C 31.4cm²
  • D 78.5cm²
💡 Explanation The area is calculated as Area = π × radius² = 3.14 × (10cm)² = 3.14 × 100 = 314cm².
Question 20 Difficulty 2
A rectangle has a length of 15m and an area of 75m². What is the width?
  • A 5m
  • B 10m
  • C 15m
  • D 20m
💡 Explanation Using the area formula, width = Area ÷ length = 75m² ÷ 15m = 5m.
Question 21 Difficulty 3
If the area of a square is 144m², what is the length of one side?
  • A 10m
  • B 12m
  • C 14m
  • D 16m
💡 Explanation The side length is found using the formula side = √(area). Side = √(144m²) = 12m.
Question 22 Difficulty 3
A circular garden has a radius of 7m. What is its area (use π ≈ 3.14)?
  • A 154m²
  • B 144m²
  • C 100m²
  • D 180m²
💡 Explanation The area is calculated as Area = π × radius² = 3.14 × (7m)² = 3.14 × 49 = 153.86m², approximately 154m².
Question 23 Difficulty 3
How much area does a rectangle with dimensions 25m by 10m cover?
  • A 250m²
  • B 300m²
  • C 200m²
  • D 150m²
💡 Explanation The area is calculated as Area = length × width = 25m × 10m = 250m².
Question 24 Difficulty 3
What is the area of a triangle with a base of 15m and a height of 12m?
  • A 90m²
  • B 120m²
  • C 75m²
  • D 100m²
💡 Explanation The area is calculated as Area = ½ × base × height = ½ × 15m × 12m = 90m².
Question 25 Difficulty 3
If a parallelogram has a base of 6m and a height of 9m, what is its area?
  • A 54m²
  • B 45m²
  • C 60m²
  • D 72m²
💡 Explanation The area is calculated as Area = base × height = 6m × 9m = 54m².
Question 26 Difficulty 3
A square has an area of 81cm². What is the length of one side?
  • A 9cm
  • B 8cm
  • C 10cm
  • D 11cm
💡 Explanation The side length is found using the formula side = √(area). Side = √(81cm²) = 9cm.
Question 27 Difficulty 3
What is the area of a circle with a radius of 8cm (use π ≈ 3.14)?
  • A 201.06cm²
  • B 100.48cm²
  • C 150.72cm²
  • D 50.24cm²
💡 Explanation The area is calculated as Area = π × radius² = 3.14 × (8cm)² = 3.14 × 64 = 200.96cm², approximately 201.06cm².
Question 28 Difficulty 3
If the area of a rectangle is 120m² and its length is 15m, what is the width?
  • A 8m
  • B 6m
  • C 10m
  • D 5m
💡 Explanation Using the area formula, width = Area ÷ length = 120m² ÷ 15m = 8m.
Question 29 Difficulty 3
A trapezoid has a base of 10m, a height of 5m, and an area of 50m². What is the length of the other base?
  • A 10m
  • B 20m
  • C 15m
  • D 25m
💡 Explanation Using the area formula for trapezoids, Area = ½ × (base1 + base2) × height. Here, 50m² = ½ × (10m + base2) × 5m. Solving gives base2 = 15m.
Question 30 Difficulty 3
What is the area of a triangle with a base of 20m and height of 8m?
  • A 80m²
  • B 100m²
  • C 120m²
  • D 160m²
💡 Explanation The area is calculated as Area = ½ × base × height = ½ × 20m × 8m = 80m².
Question 31 Difficulty 4
A circular pool has a radius of 10m. What is its area (use π ≈ 3.14)?
  • A 314cm²
  • B 314m²
  • C 31.4m²
  • D 78.5m²
💡 Explanation The area is calculated as Area = π × radius² = 3.14 × (10m)² = 3.14 × 100 = 314m².
Question 32 Difficulty 4
If a rectangular park has dimensions 50m by 30m, what is its area?
  • A 1500m²
  • B 1800m²
  • C 1200m²
  • D 1000m²
💡 Explanation The area is calculated as Area = length × width = 50m × 30m = 1500m².
Question 33 Difficulty 4
What is the area of a triangle with a base of 16m and height of 12m?
  • A 96m²
  • B 112m²
  • C 108m²
  • D 120m²
💡 Explanation The area is calculated as Area = ½ × base × height = ½ × 16m × 12m = 96m².
Question 34 Difficulty 4
Calculate the area of a parallelogram with a base of 12m and a height of 10m.
  • A 120m²
  • B 140m²
  • C 100m²
  • D 150m²
💡 Explanation The area is calculated as Area = base × height = 12m × 10m = 120m².
Question 35 Difficulty 4
A square has an area of 256cm². What is the length of one side?
  • A 12cm
  • B 14cm
  • C 16cm
  • D 18cm
💡 Explanation The side length is found using the formula side = √(area). Side = √(256cm²) = 16cm.
Question 36 Difficulty 4
What is the area of a circle with a radius of 15m (use π ≈ 3.14)?
  • A 706.5m²
  • B 600m²
  • C 500m²
  • D 700m²
💡 Explanation The area is calculated as Area = π × radius² = 3.14 × (15m)² = 3.14 × 225 = 706.5m².
Question 37 Difficulty 4
A triangle has an area of 150m² and a base of 25m. What is its height?
  • A 12m
  • B 10m
  • C 8m
  • D 6m
💡 Explanation Using the formula Area = ½ × base × height, we can find height = (Area × 2) ÷ base = (150m² × 2) ÷ 25m = 12m.
Question 38 Difficulty 4
What is the area of a rectangular field measuring 40m by 25m?
  • A 1000m²
  • B 1200m²
  • C 1400m²
  • D 1600m²
💡 Explanation The area is calculated as Area = length × width = 40m × 25m = 1000m².
Question 39 Difficulty 4
A parallelogram has a base of 20m and a height of 15m. What is its area?
  • A 300m²
  • B 400m²
  • C 450m²
  • D 500m²
💡 Explanation The area is calculated as Area = base × height = 20m × 15m = 300m².
Question 40 Difficulty 4
If a square has an area of 144m², what is the perimeter?
  • A 36m
  • B 24m
  • C 12m
  • D 48m
💡 Explanation The side length is found using the formula side = √(area). Side = √(144m²) = 12m. Perimeter = 4 × side = 4 × 12m = 48m.
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