Question

The perimeter of a rectangle is 120 m and its length is 40m . Find the area of the rectangle
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Answer 1

Ans is 800m²

Solution:

perimeter = 2 ( l + b)

$120 = 2(40 + b) \\ \frac{120}{2} = 40 + b \\ 60 = 40 + b \\ 60 - 40 = b \\ 20 = b$

Area = l × b

$\: \: \: \: \: \: = 40 \times 20 \\ = 800 {m}^{2}$

Hope it helps

Answer 2

ans

800

Step-by-step explanation:

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