Question

the area of a rectangle is 120 sq . cm if its length is 15 cm , what is its perimeter ?​

Answer 1

Given:-

Area:-120cm²

Length:-15 cm

To Find:-

Perimeter

Area of rectangle=Length×Breadth

120=15×Breadth

120/15=Breadth

8cm=Breadth

Perimeter of rectangle=2(Length+Breadth)

=2(15+8)

=2(23)

=46cm

Thus, the perimeter of the rectangle is 46cm.

Answer 2

Perimeter of rectangle is 46 cm.

Given - Area and length

Find - Perimeter

Solution - Let the breadth of rectangle be x.

Area of rectangle = length*breadth

120 = 15*x

x = 120/15

Performing division

x = 8 cm

Perimeter = 2 (length + breadth)

Perimeter = 2 (15 + 8)

Performing addition

Perimeter = 2*23

Performing multiplication

Perimeter = 46 cm

Hence, the perimeter of rectangle be 46 cm.

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