Question

Work out the circumference of a circle with radius of 7.5cm. Taki Pi to be 3.142

Answer 1

C = 47.1 cm

Explanation:

Here C = 2*pi*r. Replacing pi with 3.142 and r with 7.2 cm, we get:

C = 2(3.142)(7.5 cm) = 47.13. Note that because r is given to 1 decimal place, your area should be expressed to 1 decimal place also: C = 47.1 cm