Front

What is the distance around a circle?

Back

Circumference

Front

If my radius is 10ft, what is my diameter?

Back

20ft

Front

If my diameter is 19 inches, what is my radius?

Back

9.5 inches

Front

What is the formula for calculating the circumference of a circle?

Back

C = πd or C = 2πr

Front

What is the relationship between diameter and radius?

Back

Diameter is twice the radius (d = 2r).

Front

If the circumference of a circle is 88 inches, what is the diameter?

Back

28 inches (using C = πd).

Front

What is the circumference of a circle with a radius of 7.5 cm?

Back

15π cm (using C = 2πr).

Front

What is the area of a circle with a radius of 5 cm?

Back

25π cm² (using A = πr²).

Front

How do you convert diameter to radius?

Back

Divide the diameter by 2.

Front

What is the circumference of a circle with a diameter of 10 cm?

Back

10π cm (using C = πd).