Question

Find the breadth of the rectangle whose perimeter is $360cm$ and whose length is
(i) $116cm$
(ii) $140cm$
(iii) $102cm$

Answer 1

Perimeter of a rectangle $=2(Length+Breadth)$

$\therefore$ Breadth of the rectangle $=\frac{Perimeter}{2}-Length$
(i) Perimeter $=360cm$
Length $=116cm$
$\therefore$ Breadth $=\frac{360}{2}-116=180-116=64cm$
(ii) Perimeter $=360cm$
Length $=140cm$
$\therefore$ Breadth $=\frac{360}{2}-140=180-140=40cm$

(iii) Perimeter $=360cm$
Length $=102cm$
$\therefore$ Breadth $=\frac{360}{2}-102=180-102=78cm$