Question

Work out the perimeter of this quater circle with a radius of 7cm, pi = 3.142​

Answer 1

perimeter of quarter circle formula =
1/4 x pi x radius + 2r

so 1/4 x 3.142 x 7
= 5.4985

5.4985 + 7 + 7
= 19.4985
≈ 19.50 ( 2 decimal place )