In a circular garden of diameter 150m , a pond is constructed in the form of a circle with radius 20m. Find the area of the land left out. Use pie=3.14

Dear student,

​​​​​​Radius of circular garden=$\frac{d}{2}=\frac{150}{2}=75m$
​​​​​​Area of circular garden=$\pi r^2=3.14\times {75}^2=17662.5m^2$

​​​​​​Area of circular pond=$\pi r^2=3.14\times {20}^2=1256$$m^2$
Area of the land left out =area of circular garden-area of circular pond
=17662.5-1256=16406.5$m^2$