Question

the adjacent sides of a parallelogram are in the ratio 5 ratio 3 if the longer of the two sides is 7.5 cm find the perimeter of the parallelogram

Answer 1

$let \: y \: is \: the \: another \: side \: of \: the \: given \: parallelogram \\ \\ therefore \: according \: to \: queation \\ \\ \frac{5}{3} = \frac{7.5}{y} \\ \\ y= \frac{7.5 \times 3}{5} \\ \\ y = \frac{1.5 \times 3}{1} \\ \\ y = 4.5 \: cm \\ \\ \\ therefore \: perimeter \: of \: the \: parallelogram \\ \\ = sum \: of \: all \: sides \: of \: the \: parallelogram \\ \\ = 7.5 + 7.5 + 4.5 + 4.5 \\ \\ = 15 + 9 \\ \\ = 24 \: cm$


hope it helps...