Question

The radius is 3.5 cm, how to find the perimeter of the quarter of the circle correct to one decimal place

Answer 1

13.1 cm

Explanation:

Find the circumference and divide into 4 plus the radius, that's the perimeter of the quarter of the circle.

P = πr²/4 + 3.5

= 12.25π/4 + 3.5

= 9.6 + 3.5