Area of Rectangle


 
 
Concept Explanation
 

Area of Rectangle

A  rectangle is a four sided figure with pair of opposite parallel to each other and each angle is right angle. The adjacent sides are not equal. and are considered as length and breadth. 

Area of Rectangle = Length X Breadth

Illustration: Find the area of a rectangle having length 5 cm and breadth 4 cm.

Solution: Length = 5cm   and   Breadth = 4 cm

Area  = Length X breadth  = 5 X 4 = 20 sq cm.

Illustration: Given that the area of rectangle is 75 sq cm. if one side is 5 cm find the other side.

Solution:  One side of the rectangle = 5cm. Let the other side of the rectangle = y cm

Area of rectangle = Length X breadth   = 5 X y sq cm

According to the question:  Area of rectangle = 75 sq cm     OR   5 X y = 75 sq cm

 large y= frac{75}{5}= 15; cm

Hence the other side = 15 cm

Illustration: Find the area of a rectangle having length 4. 5 cm and breadth 3.5 cm.

Solution: Length = 4.5cm   and   Breadth = 3.5 cm

Area  = Length X breadth  = 4.5 X 3.5 = 15.75  sq cm

Illustration: Find the area of a rectangle having length3.9 cm and breadth 13 cm.

Solution: Length =3.9cm   and   Breadth = 13 cm

Area  = Length X breadth  = 3.9 X 13 =  50.7sq cm

Sample Questions
(More Questions for each concept available in Login)
Question : 1

Mohit is having a rectangular piece of metal sheet whose area is 175 sq cm and the width of sheet is 7 cm . what is the length of metal sheet ?

Right Option : A
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Explanation
Question : 2

One side of a rectangular field is 8 meters and its diagonal is 10 meters. The area of the field is

Right Option : A
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Explanation
Question : 3

The length of a rectangle is 6/5 of its breadth. If its perimeter is 132 m. Its area is:

Right Option : A
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Explanation
 
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