Question

the perimeter of rectangle is60cm. if the length of the rectangle is4 times the breadth of the rectangle find the area of the rectangle​

Answer 1

Explanation:

given

perimeter=2(l+b)=60 cm

let

breadth=b

length=4b

perimeter=2(l+b)

60=2(4b+b)

30=5b

b=6, l=4b=24

area=lb=6×24=144cm²

Answer 2

Explanation:

given

2(l+b)=60

let the breadth of the rectangle be x cm

length of the rectangle 4x

2(x+4x)=60

5x=30

x=6=breadth

length=24

area of the rectangle=l*b=6*24=144cm^2