why we minus inner from outer
Dear Student,
If you are asking that why we subtract inner circle area from outer area then it can be explained from the below figure.
The shaded area is also a part of total surface area and will be counted twice- once from bottom and once from top.
Regards.
If you are asking that why we subtract inner circle area from outer area then it can be explained from the below figure.
The shaded area is also a part of total surface area and will be counted twice- once from bottom and once from top.
Regards.