Question

the sides of a rectangle are in the ratio 3 :
2 if the area is 486 square metre find the cost of fencing it at rupees 40 per metre​

Answer 1

Answer:

Step-by-step explanation:

let the side be x

ratio of the sides are 3:2

so the sides are 3x and 2x

area of rectangle=l×b

486=3x×2x

6x=486

x^2=81

x=9

sides are 27 and 18

cost of fencing 1m^2=40

cost of fencing 486m^2=486×40

=972

cost of fencing = Rs.972