CBSE Class 7 Answered
A wire is in the shape of a square of side 22 cm. If the wire is re-bent into a circle, find its radius. Also, find the area of circle.
Asked by Topperlearning User | 15 Dec, 2013, 05:43: AM
Expert Answer
Given that the side of the square = 22 cm
Length of the wire = perimeter of the square
= 4 x side = 4 x 22 = 88 cm
Since the same wire is used to make the circle, both will have the same perimeter.
So, perimeter of the circle = 88
Thus, radius of circle = 14 cm
Now, area of circle =
Length of the wire = perimeter of the square
= 4 x side = 4 x 22 = 88 cm
Since the same wire is used to make the circle, both will have the same perimeter.
So, perimeter of the circle = 88
Thus, radius of circle = 14 cm
Now, area of circle =
Answered by | 15 Dec, 2013, 07:43: AM
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