Question

Find the breadth of the rectangle whose perimeter is 360 cm and whose length is 100 cm.

Answer 1

Hint: we calculate the breadth of the rectangle by using the value of length and by using the formula of perimeter of the rectangle
Formula used: Perimeter of rectangle is $2\times \left(l+b\right)$.


Complete step by step solution:
Given perimeter of rectangle = $360$ cm and length is $100$cm, b = ?
We know that perimeter of rectangle $2\times \left(l+b\right)$
$360=2\left(100+b\right)$
${\displaystyle \frac{360}{2}}=100+b$
$180=100+b$
$b=180-100=80cm$
Hence the breadth of the rectangle is $80$cm.
Additional information: A rectangle is a quadrilateral with four right angles. Its opposite sides are equal.
Area of rectangle $=length\times breadth$.

Note: Here,perimeter of the triangle is given,incase if the area of the rectangle was given,then make use of the formula of area and solve it