Mensuration: circles, arcs and sectors

Question 1 of 10

The area of a circle of radius 14 cm is ___ cm². (π = 22/7)

Question 2 of 10

The circumference of a circle of diameter 21 cm is (π = 22/7)

Question 3 of 10

The area of a circle of radius 17.5 cm is ___ cm². (π = 22/7)

Question 4 of 10

Find the area of a sector of angle 240° in a circle of radius 21 cm. (π = 22/7)

Question 5 of 10

Find the area of a sector of angle 90° in a circle of radius 3.5 cm. (π = 22/7)

Question 6 of 10

A semicircle of radius 7 cm has an area of (π = 22/7)

Question 7 of 10

Doubling the radius doubles the area of a circle.

Question 8 of 10

The area of a circle of radius 14 cm is 616 cm² (π = 22/7).

Question 9 of 10

The perimeter of a sector is

Question 10 of 10

The length of an arc that subtends θ° at the centre of a circle of radius r is