Question

A wire is in the shape of a square of side 10 cm. If the wires rebe
into a rectangle of length 12 cm, then its breadth is
a) 12 cm
b) 7 cm
c) 8 cm
d) 20 cm​

Answer 1

(C) 8cm

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Given :-

• Square:- Side = 10 cm
• Rectangle:- Length = 12 cm

To find :-

• Breadth of rectangle

Here we have to find perimeter of square and then breadth of rectangle,

Therefore, Perimeter of square is ,

✔ Perimeter :- 4 × Side

》4 × 10

》 40 cm

Breadth of rectangle :-

✔ Perimeter = 2 ( l + b )

》40 = 2( 12 + b)

》40/2 = 12 + b

》20 = 12 + b

》20 - 12 = b

》b = 8 cm

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Answer 2

Square perimeter 4x10 = length of the wire=40cm
Perimeter of rectangle =2(12+b)cm
Given length of wire = rectangular shape perimeter so. 2(12+b)=40cm
12+b=40/2=20
b= 20-12
b= 8
b=8 cm
It’s breadth =8cm
Option c). 8 cm is correct