Question

12. The circumference of a circle is 31.4 cm. Find the radius and the area of the circle?
(Take n = 3.14)

Answer 1

Answer:

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Radius= 5 cm

$area = {78.5cm}^{2}$

hope its help u....

Answer 2

Answer:

• Question :

The circumference of a circle is 31.4 cm. Find the radius and the area of the circle?

(Take n = 3.14)

• Solution :

Given

Circumference of circle = 31.4

• We have to find radius and area.

For finding the radius and area we have to first find the radius.

• Formula :

Formula of circumference of circle = 2πr

Formula of area of the circle = π r²

• Finding radius :

= 2πr = 31.4

= 2 x 3.14 x r = 31.4

= r = 31.4 = 5 cm

2 x 3.14

• Finding area :

The area of the circle = π r²

= 3.14 x 5 x 5

= 78.5 cm2

• Therefore :

The radius and the area of the circle are 5 cm and 78.5 cm2 respectively.

Step-by-step explanation:

Hope it helps uh mate.