Area and Circumference of Circles

Front

If the diameter of a circle is 19, what is the radius?

Back

9.5

Front

If the radius of a circle is 19, what is the diameter?

Back

38

Front

Determine the area of the circle. Leave your answer in terms of pi.

Back

A = 64pi km^2

Front

Determine the circumference of the circle. Leave your answer in terms of pi.

Back

C = 16pi km

Front

Determine the circumference of the circle. Leave your answer in terms of pi.

Back

C = 22pi mi

Front

Determine the area of the circle. Leave your answer in terms of pi.

Back

A = 121pi mi^2

Front

Determine the area of the circle. Round your answer to the nearest tenth.

Back

A = 196.1 cm^2

Front

Determine the circumference of the circle. Round your answer to the nearest tenth.

Back

49.6 cm^2

Front

Find the radius of a circle with an area of 615.75 square kilometers. Round your answer to the nearest whole number.

Back

r = 14 km

Front

Find the diameter of a circle with a circumference of 45pi cm.

Back

45 cm