Question

1. If the perimeter of a rectangle is 140 cm. If the breadth of the rectangle is 35 cm, find its length.​

Answer 1

Question

1. If the perimeter of a rectangle is 140 cm. If the breadth of the rectangle is 35 cm, find its length.​

Answer:

perimeter= 140 cm

breadth=35cm

perimeter=2(l+b)

        140=2(l+35)

           70=l+35

l=35

Answer 2

$\sf{\huge{\underline{\purple{Given :-}}}}$

• The perimeter of a rectangle is 140 cm.

• The breadth of the rectangle is 35 cm.

$\sf{\huge{\underline{\pink{To\:Find :-}}}}$

• The length of the rectangle.

$\sf{\huge{\underline{\blue{Solution :-}}}}$

We know that,

The Perimeter of Rectangle is 2(l + b) . --------(1)

Given, the perimeter of Rectangle is 140 cm. --------(2)

Equating 1 & 2 ,

➝ 2(l + b) = 140

➝ 2(l + 35) = 140

➝ 2l + 70 = 140

➝ 2l = 140 - 70.

➝ 2l = 70.

➝ l = $\dfrac{70}{2}$

➝ l = 35 cm.

Hence, The Length of Rectangle is 30 cm.

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