Question

the perimeter of a rectangle of an area 650 cm square , whose breath is 13 cm, is​

Answer 1

Area of rectangle = Length ×Breadth

Area of rectangle = 650cm²

According to the question

Length ×Breadth= 650cm²

Length ×13 cm= 650cm²

Length= 650cm²/13cm

Length=50cm

Perimeter of rectangle=2(L+B)

= 2(50cm+13cm)

=126cm

Answer 2

Answer: 126 cm

Concept: This is the simple question from the 'Area & Perimeter of the rectangle. To find the area of the rectangle we use the formula

$Area of rectangle = length(l)$×$breadth(b)$

and perimeter

$Perimeter of rectangle= 2(l+b)$

Given: Area of a rectangle = 650 cm square, breadth=13 cm

To find: Perimeter of the rectangle

Solution:

First, we find the length of the rectangle by using the formula of area of

rectangle

$area of rectangle= l*b$

                    $650= l*13$

                        $l=\frac{650}{13}$

                        $l=50 cm$

Now put this value in the perimeter formula to find the perimeter of a rectangle

$perimeter = 2(l+b)$

                $=2(50+13)$

                $= 2(63)$

                $= 126 cm$

Hence the perimeter of a given rectangle is 126 cm