Question

5)The perimeter of a rectangular field is 240 m. If its length is 90 m, find:
(i) it’s breadth
(ii) its area.

Answer 1

$finding \: breadth:-$

$PERIMETER=2(length+breadth)$

$240 = 2(90 + breadth)$

$120 = 90 + breadth$

$120 - 90 = breadth$

$so \: breadth \: = 30 \: m$

___________________________

$finding \: area:-$

$area = length \times breadth$

$= 90 \times 30$

$= 2700 \: {m}^{2}$