Question

A thin wire inform of an equilateral triangle of side 11 cm find the area of a circle whose circumference is equal to the length of the wire

Answer 1

86.70 cm^2

Explanation:

circumference = 11 x 3 = 33

circumference of a circle = nD

33 = 3.14 X D

D = 10.51

r = 10.51 / 2 = 5.25

Area = nr^2

3.14 x 5.25^2 = 86.70 cm^2