Question

find the radius of a circle whose circumference is 52.8 CM take pie equals to 22 by 7

Answer 1

Let radius be r .
2×22/7×r = 52.8 cm
r = 52.8×7/44cm
r =1.2×7cm
r = 8.4cm

Answer 2

Answer:

Radius = 8.4 cm

Step-by-step explanation:

$\text{Circumference} = 2\pi r\\\\\text{Given:} \: \text{Circumference} = 52.8 \: cm\\\\\implies 52.8 = 2 \times \dfrac{22}{7} \times r\\\\\implies 52.8 \times 7 = 44 \times r\\\\\implies 369.6 = 44r\\\\\implies \dfrac{369.6}{44} = r\\\\\implies r = 8.4 \: cm$