Question

in a circular garden of 50 m radius found in constructed in the form of circle with radius 20 m find the area of the land left out​

Answer 1

Radius(R)= 50m

Area= 22/7×50×50

radius(r)=20m

area=22/7×20×20

remaining area=22/7(50×50-20×20)

                          =22/7(2500-400)

                           =22/7×2100

                          = 22×300

                           =6600m²