Question

8. A circular piece of thin wire is converted into
a square of side 6.25 cm. If there is no loss or
gain in its length, find the radius of the circular
wire.
A. 3.75 cm
B. 3.98 cm
C. 3.25 cm
D. 4.25 cm​

Answer 1

Answer:

Correct Option is C

A circular piece of wire is converted into a square,

∴ Perimeter of circle made by wire= Perimeter of square made by wire

⇒2πr=4a (where a is the length of the side of square)

⇒r=

(2×3.14)

(4×6.25)

⇒r=3.98 cm

May be its help You