Question

the perimeter of a square is 48 CM the area of a rectangle is 4 cm square less than the area of a square if the length of the rectangle is 14 cm then its perimeter is

Answer 1

$perimeter \: of \: square =48$
$4 \times side = 48$
$side = 48 \div 4$
$side = 12$
$area \: of \: square = side \times side$
$12 \times 12$
$144 sq.cm$
$area \: of \: rectangle = 144 - 4 = 140$
$given$
$length \: of \: rectangle=14 cm$
$length \times breadth=140$
$14 \times b = 140$
$b = 140 \div 4$
$b = 10$
$so \: perimeter=2 \times l+b$
$2 \times 14 + 10$
$2 \times 24$
$48$
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