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Math Gr 8 Ch 13: Area and Perimeter

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32 Questions

What is the formula for the perimeter of a square?

P = 4s

What is the formula for the area of a rectangle?

A = l × b

What is the circumference of a circle with a radius of 4 cm?

16π cm

What is the area of a circle with a radius of 5 cm?

25π cm^2

What is the conversion factor from cm to mm?

× 10

What is the perimeter of a rectangle with a length of 6 cm and a breadth of 4 cm?

20 cm

What is the area of a square with a side length of 8 cm?

64 cm^2

What is the main difference between perimeter and area?

Perimeter measures the boundary length, area measures the surface covered

What is the perimeter of a square with a side length of 3 cm?

12 cm

What is the area of a rectangle with a length of 5 cm and a breadth of 3 cm?

15 cm²

What is the circumference of a circle with a diameter of 14 cm?

44 cm

What is the area of a circle with a radius of 7 cm?

154 cm²

What is the perimeter of a rectangle with a length of 8 cm and a breadth of 6 cm?

24 cm

What is the conversion factor from m² to cm²?

10,000

What is the area of a triangle with a base of 5 cm and a height of 6 cm?

15 cm²

What is the perimeter of a composite shape made up of two identical rectangles with a length of 4 cm and a breadth of 3 cm?

28 cm

What is the perimeter of a rectangle with a length of 10 cm and a breadth of 8 cm?

40 cm

What is the area of a triangle with a base of 8 cm and a height of 12 cm?

48 cm²

What is the circumference of a circle with a diameter of 20 cm?

62.8 cm

What is the area of a composite shape made up of two identical squares with a side length of 6 cm?

96 cm²

What is the conversion factor from km² to m²?

1,000,000

What is the perimeter of a square with a side length of 9 cm?

45 cm

What is the area of a circle with a radius of 9 cm?

254.34 cm²

What is the conversion factor from m to cm?

100

A rectangular garden measures 20 m by 15 m. What is the cost of fencing it, if the cost of fencing is ₹ 50 per meter?

₹ 2000

A circle has a circumference of 44 cm. What is the area of the circle?

154 cm²

A square has an area of 144 cm². What is the perimeter of the square?

48 cm

A rectangular piece of paper has a length of 20 cm and a breadth of 15 cm. If a rectangular strip of width 2 cm is cut from it, what is the area of the remaining piece of paper?

270 cm²

A circular garden has a diameter of 14 m. If a path of width 2 m is constructed around the garden, what is the area of the path?

32π m²

A triangle has a base of 10 cm and a height of 12 cm. What is the area of the triangle?

60 cm²

A rectangular shape is formed by combining two identical rectangles, each with a length of 8 cm and a breadth of 5 cm. What is the perimeter of the combined shape?

40 cm

A square has a side length of 10 cm. If the side length is increased by 20%, what is the percentage increase in the area?

44%

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