The above circle, which is divided into sectors of equal size, has diameter 20. Give the area of the shaded region.

Refer to the above figure, Which is the greater quantity?

(a) The area of

(b) The area of the orange semicircle

What is the area, rounded to the nearest hundredth, of the sector shaded in circle O in the diagram above?

What is the area, rounded to the nearest hundredth, of the sector shaded in circle O in the diagram above?

Refer to the above figure, Which is the greater quantity?

(a) The area of the orange semicircle

(b) The area of

Circle A has twice the radius of Circle B. Which is the greater quantity?

(a) The area of a sector of Circle A

(b) The area of Circle B