Basic Mensuration - Area & Perimeter

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Q1. A rectangle has a length of 8 cm and a width of 3 cm. What is its area?

Solution:

Area = length × width = 8 cm × 3 cm = 24 cm².

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Q2. What is 20 divided by 4?

Solution:

20 ÷ 4 = 5.

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Q3. What is 3 times 7?

Solution:

3 × 7 = 21.

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Q4. If a triangle has a base of 5 cm and a height of 4 cm, what is its area?

Solution:

Area = 1/2 × base × height = 1/2 × 5 cm × 4 cm = 10 cm².

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Q5. What is the area of a rectangle with length 5 cm and width 3 cm?

Solution:

Area = length × width = 5 cm × 3 cm = 15 cm².

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Q6. What is the perimeter of a rectangle with a length of 7 cm and a width of 2 cm?

Solution:

Perimeter = 2 × (length + width) = 2 × (7 cm + 2 cm) = 18 cm.

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Q7. What is 3 times 4?

Solution:

3 × 4 = 12.

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Q8. What is the perimeter of a rectangle with length 7 cm and width 2 cm?

Solution:

Perimeter = 2 × (length + width) = 2 × (7 cm + 2 cm) = 18 cm.

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Q9. What is 24 divided by 6?

Solution:

24 ÷ 6 = 4.

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Q10. If a square has a side length of 4 cm, what is its perimeter?

Solution:

Perimeter = 4 × side = 4 × 4 cm = 16 cm.