Question

Find area of a rectangle of its perimeter is 72cm and breadth is 12cm​

Answer 1

Answer:

given

perimeter= 72cm

breadth= 12cm

to find: area of rectangle

Step-by-step explanation:

perimeter of rectangle= 2(l+b)

72= 2(l+12)

72/2= l+12

36= l+12

l= 36-12

l=24cm

therefore,

area of rectangle= l*b

where,... l= 24cm, b= 12cm

area of rectangle= 24*12

area of rectangle= 288cm^2

Answer 2

Given,

Breadth= 12cm

Perimeter of a rectangle= 72cm

Step-by-step explanation:

Perimeter of a rectangle= 2(L+B)

72= 2×( L+ 12)

72= 2L+ 24

72-24= 2L

48= 2L

48/2= L

24= L or L= 24cm

Now,

Area of a rectangle= L×B

=24cm× 12cm

= 288sq.cm

therefore area of a rectangle= 288sq.cm