Question

a wire of length 154 m is bent to form a circle . Find the radius so formed

Answer 1

Answer:

given length of wire = 154 m

if it form circle then

length of wire =circumference of circle

2 pie R =154

R=154/2 × 7/22 =49/2

49/2 =24.5

radius of circle is 24.5 cm

Answer 2

The radius of circle is 24.5 m

Given - Length = 154 m

Find - Radius

Solution - The length of wire will be equal to circumference of circle. So equating the formula of circumference with length to find the radius.

As per the known fact formula of Circumference is 2πr, where r is radius.

Keep the values in formula to find the radius.

154 = 2*3.14*r

Performing multiplication on Left Hand Side to find the value of radius. Also, shifting multiplied value to other side as denominator.

r = 154/6.28

Performing Division to the value of radius

r = 24.5 m

Hence, the radius of circle is 24.5 m.

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