Question

Find the circumference of a circle with radius, r = 6.8m. Give your answer rounded to 1 DP.

Answer 1

42.7 m

Explanation:

The Circumference of a circle is found by multiplying the radius of the circle by 2π. Here the radius is 6.8 m. The circumference of this circle is

C = 2π(6.8 m) = 13.6π m, or (to 1 decimal place, 42.7 m.