Question

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A rectangular ground is 90 m long and 32 m broad. In it's centre,there is a circular tank of radius 14 m. Find the cost of planning grass in the remaining portion at the rate of Rupees 2.50 per m^2

Answer 1

5660 is the answer of this question

Answer 2

Given,

Length of ground = 90 m.

Breadth of ground = 32 m.

We know that Area of ground = Length * Breadth

                                                  = 90 * 32

                                                  = 2880 m^2.

Given that there is a circular tank of radius r = 14 m.

We know that Area of circular tank = πr^2

⇒ (22/7) * (14)^2

⇒ 616 m^2 .

Hence, Area of remaining portion = 2880 - 616

                                                         = 2264 m^2.

Now,

Given that cost per m^2 = 2.50.

Cost of 2264 m^2 = 2264 * 2.50

                              = 5660.

Therefore, Cost of planning grass in the remaining portion = 5660.

Hope it helps!