Question

the length of the rectangle is 7 by 5 of its breadth it ots perimeter is 48 cm find its length?

Answer 1

Given:-

perimeter=48cm

Let breadth be x
and length be ${\frac{7}{5}x}$

Perimeter=2(l+b)

48=2(${\frac{7}{5}}$x + x)

${\frac{48}{2}}$=1.4 x+ x

24=2.4 x

$x={\frac{24}{2.4}}$

${\bf{\blue{x=10}}}$

${\bf{\red{Breadth=10 cm}}}$

Length=${\frac{7}{5}×10}$

${\bf{\purple{Length=14 cm}}}$