Question

Inside a square land having perimeter equal to 120

Q: Answer-Inside a square land having perimeter equal to 120 metres, leaving aside a circular land of radius 1...

Let the length of each side of the square land x metres Then, perimeter of the land 4x 120 metres So, x 1204 30 So, area of the square land x2 302 900 m2 Area of the circular land radius2 227 14 14 616 m2 Therefore, area to be levelled 900 616 284 m2 Cost of leveling 284 28 Rs. 7952

metres, leaving aside a circular land of radius 14 metres, the remaining land needs to be levelled at a cost of 28 rupees per square metre. What is the cost of leveling?

A Rs. 7902

B Rs. 7912

C Rs. 7952

D Rs. 7852