Home
Class 9
MATHS
If the breadth of a rectangle is increas...

If the breadth of a rectangle is increased by 5 cm, its area increases by `25cm^2`.If increased by 5 cm, its area increases by `20cm^2`,Fins the area of the rectangle (In `cm^2`

Text Solution

Verified by Experts

Area=`l*b=Acm^2-(1)`
`l(b+5)=(A+25)-(2)`
`(l+5)b=(A+20)-(3)`
subtracting equation 1 from equation 2
5l=25
l=5cm
subtracting equation 1 from equation 3
`5b=20cm^2`
...
Promotional Banner

Similar Questions

Explore conceptually related problems

The area of a circle is increased by 22 cm^2 its radius is increased by 1 cm. The original radius of the circle is

The length of a rectangle is twice its breadth. If its length is decreased by 5cm and breadth is increased by 5cm, the area of the rectangle is increased by 75cm ,the area of the rectangle the rectangle.

The length of a rectangle is 15 cm and breadth is 5 cm. Find its area.

The length of a rectangle is twice its breadth. If its length is decreased by 5 cm and breadth is increased by 5 cm, the area of the rectangle is increased by 75 Sq cm. What is the length of the rectangle?

The length of a rectangle exceeds its breadth by 7 cm. If the length is decreased by 4 cm , and the breadth is increased by 3 cm, the area of the new rectangle is the same as the area of the original ractangle. Find the length and breadth of the original rectangle.