Question

A rectangular ground 120 m long and 90 m broad. In the middle of the ground, there is a circular tank of radius 28 m. Find the cost of turfing the remaining portion at the rate of ₹15 per square metre

Answer 1

Soln:-

Area of the ground =(120×90)m^2
=10800 m^2

Area of the circular tank =22/7×28×28
=2464 m^2

Remaining area=(10800-2464) m^2
=8336 m^2

Cost of turfing =Rs(8336×15)
=Rs125040

Answer 2

The cost of turfing the remaining portion at the rate of ₹15 per square metre is Rs.125040

Step-by-step explanation:

Length of rectangular ground = 120 m

Breadth of rectangular ground = 90 m

Area of ground =$Length \times Breadth = 120 \times 90 =10800 m^2$

We are given that In the middle of the ground, there is a circular tank of radius 28 m.

Area of circular tank =$\pi r^2 = \frac{22}{7} (28)^2 = 2464 m^2$

Area of remaining portion = 10800 sq.m. - 2464 sq.m.=8336 sq.m.

Cost of turfing 1 sq.m. = Rs.15

Cost of turfing 8836 sq.m. =8336 \times 15 = 125040

Hence the cost of turfing the remaining portion at the rate of ₹15 per square metre is Rs.125040

#Learn more :

In rectangular plot of land 70m long and 40m broad circular garden of radius 17. 5 m is developed. find the cost of turfing the remaining portion at the rate of rupee 28. 50 per sq. metre

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