Question

find the area of a circle of diameter 8.4 metre

Answer 1

Hi !!!

This is your answer......

Given diameter :----
8.4 m.

We know that radius = diameter/2.

So,
r = 8.4/2 m

Also, area of circle .....
= πr².
$= > \frac{22}{7} \times \frac{8.4}{2} \times \frac{8.4}{2} \\ = 11 \times 1.2 \times 4.2 \\ = 55.44 \: {m}^{2}$
Hence, the area of circle is 55.44 m².

hope you got the the answer

Answer 2

area of circle= pie r×r
22/7×8.4/2×8.4/2
22/7 × 4.2 × 4.2
22/7×17.64
22×2.52
55.44