Question

Mr thapa built a circular pond of diameter 28ft for fish farming in his rectangular field of length 70ft and breadth 40ft find the area of the field excluding the pond also estimate the cost of planning vegetable at rs 11 per square feet​

Answer 1

Answer:

First calculate the area of the field then minus it with the area of the pond. now multipy the remaining area with rs11

Answer 2

Answer:

Area of field excluding the pond = 2184 sq ft

Cost of planting vegetables = 24,024 Rs

Step-by-step explanation:

So given here is

diameter (d) = 28 ft

So radius (r) = 28/2 = 14 ft

So area of circular pond = pi r^2 = 22/7 x 14 x 14

                                         = 616 sq ft

length (l) of rectangular field = 70 ft

and breadth (b) = 40 ft

Area of rectangular field = l x b = 70 x 40

                                         = 2800 sq ft

Area of field excluding the pond = 2800 - 616 = 2184 sq ft

Cost of planting vegetables = Area of field excluding the pond x 11 Rs

                                               = 2184 x 11

                                               = 24,024 Rs

Hope this helps : )