Question

a rectangular plot of 40m ×60m is to be converted into a park with 2m pathway on the inside of the boundary. there are also going to be 2 circular ponds of 10m radius and a sandbox of 20m×20m . the remaining area is paved at 4rs square meters. what is the cost of paving?​

I need explanation of answer if it is a 3 to 5 mark question

Answer 1

40 into 60 -) 2,400

20 into 20 -) 400

Answer 2

Answer:

Side of a square park= 60m

Length of a square park= 90m

Area of the rectangle park= Area of the square park

90m\ \times6=60m\times60m90m ×6=60m×60m

b=\frac{60m\times60m}{90}b=

90

60m×60m

b=40m

Hence, the required breadth= 40m.