Question

5.
If the area of a circle is 154 m2, find its radius. Also find the circumference of the circle​

Answer 1

$\mathbb{SOLUTION}$

Area of the circle = π r^2

$\frac{22}{7} \: \times r {}^{2} = 154$

Radius =7cm

Circumference of the circle = 2 π r

$2 \times \frac{22}{7} \times 7 = 44cm$

Answer 2

Answer:

Step-by-step explanation:

Given for the circle,

Area= 154 m²

Therefore A/Q

=> πr² = 154

=> r² = 154×7/22 [cancelling 22 and 154 to get 7]

=> r =√7×7

=> r = 7 m

Therefore circumference=2πr

= 2× 22/7×7; = 44m