Question

A piece of wire is in the form of rectangle whose length and breath are 35 cm and 31 cm respectively. It is resent to form a circle. Find its radius?

Answer 1

Answer:

Step-by-step explanation:

Perimeter of square/ circle = 132

Therefore radius of circle =r

R²π=132

R² =42.01

R=6.4815

Answer 2

Answer:

Step-by-step explanation:

Given,

For rectangle:

Length, L=35cm

Breadth,B=31cm

So it's perimete=2(L+B)

=2(35+31)

=2(66)

=132cm

Now if it is resent to form a circle so it's perimeter will be equal to circumference (perimeter of circle)

Circumference of circle = 2pier i. e. 2×22/7×r

So it will be

132=2×22/7×r

2×22/7×r=132

22/7×r=132/2

22/7×r=66

r=66×7/22

r=3×7cm

r=21cm

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