Question

The length of a rectangle is 18 cm and its breadth is 10 cm. when the length is increased to 25 cm, What will be the breadth of the rectangle if the area remains the same? ​

Answer 1

Answer:

lb =18*10=180cm²

since area remains same so,

area=lb

180=25*b

b=180/25

b=7.2cm

Answer 2

Given,

Length of rectangle = 18 cm

Breadth of rectangle = 10 cm

Area of rectangle = l x b

Ar(Rectangle) = (18 x 10) cm²

Ar(Rectangle) = 180 cm²

Again,

New length = 25 cm

Let new breadth = y

Area of rectangle = 180 cm²

=> 25 x y = 180 cm²

=> y = 180/25

=> y = 7.2 cm

Hence, new breadth = y = 7.5 cm