Area and Circumference

Front

What is the formula for area of a circle?

Back

A = π×r²

Front

What is the formula for Circumference?

Back

C = 2×π×r

Front

What is the radius of this circle? Options: 18 in, 10 in, 9 in, 8 in

Back

9 in

Front

What is the diameter of this circle? Options: 3.5 m, 3 m, 5 m, 7 m

Back

7 m

Front

What is the circumference of this circle? Options: 3.14 cm, 37.68 cm, 24 cm, 68.4 cm

Back

37.68 cm

Front

Find the area of the circle below.

Back

28.26 cm²

Front

Find the area of the circle

Back

254.34 in²

Front

Find the circumference (to the nearest whole number)

Back

88 in

Front

What is the area of this semicircle? Options: 100.48cm², 80cm², 200.96cm², none of the above

Back

none of the above

Front

Jayne has a circular lollipop with a circumference of 25.12 inches. What is the diameter? Use π = 3.14.

Back

8 in.