Question

If the length and breadth of a rectangle area in the ratio 5:3 and it's perimeter is 144 m, find the area of the rectangle.

Answer 1

Answer:

Step-by-step explanation:let the length and breadth be 5x and 3x respectively,

A/Q

2(l+b) = perimeter

2(5x+3x) = 144

2 × 8x = 144

16 x = 144

x = 9

therefore , length = 5x I.e., 5 ×9 =45

Answer 2

given,

l:b=5:3

perimeter=144m

let,

l=5x

b=3x

we know,

perimeter of rectangle=2(l+b)

144=2(5x+3x)

144=2*8x

144=16x

X=9m

l=5x=5*9=45m

b=3x=3*9=27m

area of rectangle=l*b

=45*27

=1215m2