Question

The cost of cultivating a rectangular field at the rate of Rs, 3 per square metre is Rs.

1728. If the breadth of the field is 18 m , find the cost of fencing the field at Rs. 8.5 per

metre.​

Answer 1

Answer:

The cost fencing is ₹850.

Step-by-step explanation:

Rate of Cultivating Rectangular field = ₹3 x Area of Rectangular Field

Here it is given that rate of cultivating field is  ₹1728

∴ 3 x Area Of Rectangular Field = 1728

  Area of Rectangular field = $\frac{1728}{3}$

                                             = 576$m^{2}$

We know that,

Breadth of the field = 18m

Area of the field = L x B

                   576 = L x 18

                    L    =    $\frac{576}{18}$

                    L    = 32m

So we found that he length is 32m.

Perimeter of Rectangle = 2(l+b)

                                      = 2(32+18)

                                      = 2 x 50

                                      = 100m

Cost of Fencing = ₹8.5 x Perimeter

                           = ₹8.5 x 100

                           = ₹850

∴The cost fencing is ₹850.

Answer 2

Answer:

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