Question

The sides of a rectangluar park are in the ratio 4:3 if the area is 1728m² find the cosg of fencing it at rw 30 per meter

Answer 1

Answer:

Step-by-step explanation:

Let, the sides be 4x and 3x.

Area = l*b

=> 1728 = 4x*3x

=> 1728 = 12x²

=> 1738/12 = x²

=> 144 = x²

=> 12 = x

3x = 3*12 = 36

4x = 4*12 = 48

Perimeter = 2(l+b)

= 2(36+48)

= 2(84)

= 168 m

Cost of fencing = 168*30

= Rs. 5040