Question

A farmer has a circular field of radius 120 m. It has a well in the middle of the field of radius 8 m. How much area he has for growing his crops? I know how to solve it but I 'm asking just to confirm my answer.

Answer 1

Area of the full circlular farm = πr²
                                                 ⇒ 22÷7 × 120 × 120
                                                 ⇒ 45257.1 m²
Area of well = πr²
                     ⇒ 22÷7 × 8 × 8
                     ⇒ 201.1 m²

Area of remaining land to grow crops = 45257.1 - 201.1
                                                              ⇒ 45056 m²

Answer 2

Answer:

Area of remaining field to grow crops = area of farm - area of well.

Area of farm = 22/7 *120*120

=45257.1 m^2

Area of well =22/7*8*8

=201.1m^2

Area of remaining farm

=45257.1 - 201.1

=45056m^2