Question

the length of a rectangle is 18 cm and it's breadth is 10 cm when the length is increased to 25cm what will be the breadth of the rectangle if the area remains same

Answer 1

Hi,


Dimensions of the first rectangle ,

length = l = 18cm,

Breadth = b = 10 cm

Dimensions of the second rectangle,

Length = L = 25 cm

Let the breadth = B cm
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We know that ,

Area of the

rectangle = length × breadth

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Areas of the two rectanngles are

equal ..

L × B = l × b

25 × B = 18 × 10

B = ( 18 × 10 ) / 25

B = 7.2 cm

I hope this helps you.

:)

Answer 2

Hey!

Case I: First Rectangle 

Length(l) = 18cm
Breadth(b) = 10 cm

Case II: Second Rectangle

Length(l) = 25cm
Breadth(b) = ?
Let it be x.

Area of both rectangles:

l * b = l * b
18 * 10 = 25 * x
(18*10)/25 = x
7.2 = x
or x = 7.2
  
Hence, the Breadth(x) = 7.2 m