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

A park is 10m long and 8m broad. What is the length of longest pole that can be placed in the park:

Right Option : D
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Explanation
Question : 2

The area of plastic sheet is 300 sq . cm and its length is 30 cm. what is the breadth of the plastic sheet ?

Right Option : A
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Explanation
Question : 3

Find the area of a rectangular plot one of its side is 3 meters and its diagonal is 5 meters :

Right Option : C
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Explanation
 
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