Circumference and Area of Circles

Front

Find the circumference when the d=7in. Round to the nearest whole number.

Back

22 inches

Front

Find the circumference when the r=3.2 inches. Round to the nearest whole number.

Back

20 inches

Front

Find the area when d= 10.5 cm.

Back

86.6 square cm

Front

Find the area when r = 18.

Back

1017.9 sq cm

Front

Find the radius of a circle that has a circumference of 340 cm.

Back

54.1 cm

Front

Find the diameter of a circle that has a circumference of 74 cm.

Back

23.6 cm

Front

Find the radius of a circle that has an area of 212 square inches.

Back

8.2 inches

Front

Find the diameter of a circle that has an area of 100 square cm.

Back

11.2 cm

Front

What did we use as an approximation?

Back

3.14

Front

The area of a circle is 195 square inches. Find the circumference of the circle.

Back

49.5 inches