The radius of a circle is 19.5 cm. Find the circumference to the nearest tenth to the nearest tenth.

Answer 1

The circumference of a circle is given by the formula: C = 2πr, where r is the radius.

Given that the radius of the circle is 19.5 cm, we can substitute this value into the formula to find the circumference:

C = 2π(19.5) ≈ 2 × 3.14 × 19.5 ≈ 122.22 cm

Therefore, the circumference of the circle is approximately 122.2 cm to the nearest tenth.