Question

Rhe perimeter of a square us 48cm the area of a rectangle is 4cm2 less then the area of the square if length of the rectangle is 14cm then its perimeter is

Answer 1

$hey \: there \: your \: answer \\ \\ \\ the \: perimeter \: of \: square = 48cm \\ so \\ \: \: \: \: 4 \times side = 48 \\ \: \: \: \: side = \frac{48}{4} \\ \: \: \: \: side = 12cm \\ area \: of \: square = 12 \times 12 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 144 {cm}^{2} \\ according \: to \: question \: area \: of \: \\ rectangle \: is \: 4 {cm}^{2} \: less \: than \: area \\ \: of \: square \\ \\ so \\ \: \: \: \: area \: of \: rectangle = 144 {cm}^{2} - \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: 4 {cm}^{2} = 140 {cm}^{2} \\ \\ given \: that \: length \: = 14cm \\ \\ so \: \\ \: \: \: \: l \times b = 140 {cm}^{2} \\ \: \: \: \: 14 \times b = 140 \\ \: \: \: \: b = \frac{140}{14} \\ \: \: \: \: b = 10cm \\ \\ perimeter = 2( l+b ) \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 2(14 + 10) \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 2 \times 24 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 48cm \\ \\ \\ \\ please \: mark \: me \: brainlist$