Maths-
General
Easy
Question
The circumference of a circle is 28.3 cm. Find its radius and area.
Hint:
Given the circumference of the circle .Find the radius of the circle by using the formula circumference of circle and substitute r in the area of circe formula.
The correct answer is: The area of the circle is 63.585 sq. m.
ANS :- Radius of the circle is 4.5 m and area of the circle is 63.585 sq. m
Explanation :-
Given, circumference of circle = 28.3 cm
let the radius of circle r
Step 1:- Find the radius of circle
Then we get circumference of circle 
∴ The radius of the circle is 4.5 m.
Step 2 :- Find the area of the circle from the radius.
Then we get area of circle = 
∴ The area of the circle is 63.585 sq. m.
∴ The radius of the circle is 4.5 m.
Step 2 :- Find the area of the circle from the radius.
Then we get area of circle =
∴ The area of the circle is 63.585 sq. m.
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