Mathematics grade 8

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Area and sectors

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Tr. Sam

Kenia

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Froggy Jumps Mathematics grade 8Versión en línea Area and sectors por Tr. Sam 1 What is the formula for the area of a circle? a πr² b πd c 2πr 2 If the radius is 7 cm, what is the area? a 44 cm² b 154 cm² c 49 cm² 3 What is the radius of a circle? a The distance around the circle b The longest chord c The distance from centre to edge 4 Formula for area of a sector: a (θ/360) × πr² b πd c 2πr 5 A circle has radius 6 cm. Find area of a 60° sector. a 300 cm² b 20 cm² c 56.52 cm² 6 A 90° sector is what fraction of a circle? a 1/2 b 1/4 c 1/8 7 A circle has an area of 314 cm². What is the radius? a 10 cm b 8 cm c 6 cm 8 A circle has radius 14 cm. What is the area of a 30° sector using π = 22/7? a 154 cm² b 14 cm² c 154/3 cm² 9 The diameter of a wheel is 84 cm. What is the area of the wheel? (π = 22/7) a 4620 cm² b 5544 cm² c 2640 cm² 10 A sector has radius 12 cm and area 150.72 cm². Find the angle. (π = 3.14) a 60° b 45° c 30° 11 A circular garden has area 452.16 m². What is the radius? (π = 3.14) a 14 m b 12 m c 24 m 12 A pizza has a radius of 20 cm. What is the area of a slice that forms 15° of the pizza? (π = 3.14) a 157 cm² b 104.67 cm² c 314 cm²

Froggy Jumps

Mathematics grade 8Versión en línea

Area and sectors

por Tr. Sam

What is the formula for the area of a circle?

πr²

πd

2πr

If the radius is 7 cm, what is the area?

44 cm²

154 cm²

49 cm²

What is the radius of a circle?

The distance around the circle

The longest chord

The distance from centre to edge

Formula for area of a sector:

(θ/360) × πr²

πd

2πr

A circle has radius 6 cm. Find area of a 60° sector.

300 cm²

20 cm²

56.52 cm²

A 90° sector is what fraction of a circle?

1/2

1/4

1/8

A circle has an area of 314 cm². What is the radius?

10 cm

8 cm

6 cm

A circle has radius 14 cm. What is the area of a 30° sector using π = 22/7?

154 cm²

14 cm²

154/3 cm²

The diameter of a wheel is 84 cm. What is the area of the wheel? (π = 22/7)

4620 cm²

5544 cm²

2640 cm²

A sector has radius 12 cm and area 150.72 cm². Find the angle. (π = 3.14)

60°

45°

30°

A circular garden has area 452.16 m². What is the radius? (π = 3.14)

14 m

12 m

24 m

A pizza has a radius of 20 cm. What is the area of a slice that forms 15° of the pizza? (π = 3.14)

157 cm²

104.67 cm²

314 cm²

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Mathematics grade 8

Froggy Jumps

Sobre esta actividad

Creada por

Descarga la versión para jugar en papel

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Froggy Jumps

Mathematics grade 8Versión en línea

por Tr. Sam

What is the formula for the area of a circle?

If the radius is 7 cm, what is the area?

What is the radius of a circle?

Formula for area of a sector:

A circle has radius 6 cm. Find area of a 60° sector.

A 90° sector is what fraction of a circle?

A circle has an area of 314 cm². What is the radius?

A circle has radius 14 cm. What is the area of a 30° sector using π = 22/7?

The diameter of a wheel is 84 cm. What is the area of the wheel? (π = 22/7)

A sector has radius 12 cm and area 150.72 cm². Find the angle. (π = 3.14)

A circular garden has area 452.16 m². What is the radius? (π = 3.14)

A pizza has a radius of 20 cm. What is the area of a slice that forms 15° of the pizza? (π = 3.14)

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