Question

A piece of wire is 144 cm long. What will be the length of each side if the wire is used to form:
(a) a rectangle having breadth 34 cm.
(b) a regular octagon.​

Answer 1

Given : A piece of wire is 144 cm long.

To Find : length of each side if the wire is used to form:

(a) a rectangle having breadth 34 cm.

(b) a regular octagon.

Solution :

perimeter of rectangle = 2(length + breadth ) = 144

length + 34 = 72

length = 38 cm

perimeter of octagon = 8 × length = 144

length= 18 cm

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Answer 2

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