Question

Find the radius and diameter of a circle whose circumference is 31.4 cm. Also find its area. (Take )

Answer 1

Step-by-step explanation:

Diameter of the circle is equal to two times the radius

I.e D=2×r−−−−(1)

Given the circumference of the circle

C=31.4

⇒2πr=31.4

⇒r=31.42π

⇒r=31.42×3.14=5cm

Substituting in equation (1) we ge

D=2×5=10cm