Question

the sides of a rectangular Park are in the ratio 5:4 if its perimeter is 630 cm. find its area​

Answer 1

Answer:

24500 cm square

Step-by-step explanation:

let the sides of rectangular Park be 5x and 4x

perimeter = 2(l+b)

630 cm= 2(5x+4x)

630 cm= 2(9x)

630 cm= 18x

630 ÷ 18 = x

35 = x

l = 5x = 5(35) = 175 cm

b = 4x = 4(35) = 140 cm

area = l × b

       = 175 cm × 140 cm

       = 24500 cm square

Answer 2

Step-by-step explanation:

Given ratio, 5:4

Perimeter= 630cm

Let the sides be 5x and 4x

Perimeter of rectangle= 2(l+b)

630cm=2(5x+4x)

=18x

630/18 =x

35=x

Therefore, sides are 5*35= 175cm

And,. 4*35= 150cm

Area of rectangle= l*b

=175*150

=27250cm^2