Question

A rectangular ground is 90 m long and 32 m broad. In the middle of the ground there is circular tank of radius 14 meters. Find the cost of turfing the remaining portion at tge rate of rs 50 per square meter.

Answer 1

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Answer 2

First we must find the area of the "remaining portion".
Area of the remaining portion= area of rectangular ground- area of tank.
Area of rectangular ground= l x b= 90x 32=2880 m sq.
Area of circular tank= 2 x pi x r= 2x 22/7x 32=201.14 m sq.
Area of remaining portion= 2880-201.14= 2678.86.
Now to find the cost we have to multiply rate and area
rate x area=cost.
Therfore cost=2678.86 x 50= 133943
The answer is Rs 1,33,943.