Question

The area of a rectangle is 400m² and its length is 40m. Find its breadth and perimeter.

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Answer 1

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Answer:

Given :-

Area of Rectangle = 400 m²

Length = 40 m

To Find :-

Breadth

Perimeter

Solution :-

At first we need to find the breadth of rectangle. Then we need to find the perimeter by using the formula.

$\mid \pmb{Breadth = \dfrac{Area}{Length}} \mid$

Breadth = 400/40

Breadth = 40/4

Breadth = 10 m

Finding Perimeter

$\mid \pmb{Perimeter = 2( \ell + b)} \mid$

$\sf \: Perimeter = 2(40 + 10)$

$\sf \: Perimeter = (2 \times 40) + (2 \times 10)$

$\sf \: Perimeter = 80 + 20$

$\sf \: Perimeter = 100 \: m$

Answer 2

Step-by-step explanation:

Area of Rectangle = Length × Breadth

400 = 40 × Breadth

Breadth = 10 m

Perimeter = 2(L + B)

= 2(40 + 10)

= 100 m