Question

A piece of wire 144cm long is bent to form a semicircle .Find the diameter of semicircle,giving your answer in meters

Answer 1

Answer:

0.916 m

Step-by-step explanation:

Radius = r; Diameter = d; π = 3.14 or 22/7

Perimeter of Semicircle, P = πr = πd/2

So, P = (22/7) × d/2

⇒144 = (22/14) × d

⇒144 × 14/22 = d

⇒d = 91.63 cm or 0.916 m