Question

The perimeter of a rectangular field 80m long is 240m. Find the area of the field in ares.
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Answer 1

Perimeter = 2( l + b )

$= > 240 = 2(80 + b)$

$= > 240 = 160 + 2b$

$= > 2b = 80$

$= > b = 40m$

Area = l × b

$= > area = 80 \times 40$

$= > area = 3200 {m}^{2}$

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