Question

The Perimeter of a rectangle
rectangle is 120cm
and it length is 40. Find the area of
the rectangle ?​

Answer 1

Perimeter = 120 cm

length = 40

perimeter of rectangle = 2(l+b)

120 = 2(40+b)

120/2=40+b

60-40=b

b = 20

Therefore, breadth of the rectangle is b=20.

Area= l×b

= 40×20

= 800

Answer 2

QuestioN:-

• The Perimeter of a rectangle is 120cm and it length is 40cm. Find the area of the rectangle ?

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Given :-

• Perimeter of rectangle= 120cm
• Length of rectangle 40 cm

To find :- Area of rectangle

Concept:-

First we find breadth of rectangle for area.

SolUtioN:-

We know that

☛ Perimeter of rectangle =2 × ( L + b )

☛ 120 = 2 × ( 40 +b)

☛ 120 = 80 + 2b

☛ 120 - 80 = 2 b

☛ 40 = 2b

☛ b = 40/ 2

☛ B = 20 cm

❊ We want the are of rectangle so ,

➜ Area of rectangle = l × b

➜ 40 × 20

➜ 800 cm^2

✫ Therefore , Area of rectangle is 800 cm^2

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More information :-

• All angles of rectangle are all .
• All angles are of 90 °
• It is type of parallelogram.

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