Area and Circumference of Circles Review

Front

Formula to calculate the area of a circle?

Back

A = πr²

Front

If the radius of a circle is 5 cm, what is its area?

Back

78.54 cm²

Front

Area of a circle with a diameter of 12 meters?

Back

113.04 square meters

Front

Calculate the area of a circle with a diameter of 8 inches.

Back

50.24 square inches

Front

If the area of a circle is 81 square units, what is its radius?

Back

9 units

Front

What is the formula to calculate the circumference of a circle?

Back

πd

Front

If the diameter of a circle is 5 cm, what is its circumference?

Back

15.7 cm

Front

Calculate the circumference of a circle with a radius of 6 meters.

Back

12π

Front

What is the circumference of a circle with a diameter of 14 inches?

Back

14π inches

Front

What is the area of a circle with a diameter of 6?

Back

28.26