Question

Q. The perimeter of a rectangle is 240 cm if the breadth of the rectangle is 30 cm find its length also find the area of rectangle​

Answer 1

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Perimeter of the rectangle = 240 cm

Breadth = 30cm

Length = ??

We know that,

Perimeter of a rectangle = 2(l + b)

=> 240 = 2(l + 30)

=> 240/2 = l + 30

=> 120 = l + 30

=> l = 120-30

=> l = 90cm.

Hence, we got length as 90cm

Area of the rectangle = l*b

= 90*30

= 2700cm² ans.

Answer 2

Answer:

90 cm= b

Step-by-step explanation:

Given:

Perimeter of the rectangle= 240 cm

breadth of the rectangle= 30 cm

To find:

The length of the rectangle

Solution:

Peri= 2(l+b)

240 cm= 2(30+b) cm

240 cm= 60cm + 2b

240 - 60cm= 2b

180 cm= 2b

90 cm= b