Question

if each side of a rectangle is triplet , find the ratio between areas of the original rectangle and new rectangle .​

Answer 1

If Original area of rectangle be l×b

New area be 3l×3b

Ratio = $\dfrac{lb}{9lb}$ = 1:9

Answer 2

$If \:Original\: area \:of\: rectangle \:be\: l×b\\\\New \:area \:be \:3l×3b\\\\Ratio = \dfrac{lb}{9lb}\\\\ = 1:9$