Question

find the area of a shaded region.
please five me answer step by step ​

Answer 1

Answer:

$9\pi \: sqr.units$=28.26sqr.units

Step-by-step explanation:

Area of big circle =

$\pi \: r ^{2} = \pi5 {}^{2} = 25\pi \: sqr.units$

Area of small circle i.e. one inside of bigger circle

$\pi \: r {}^{2} = \pi4 {}^{2} = 16\pi \: sqr.units$

thus , area of shaded region =

$25\pi - 16\pi = 9\pi \: sqr.units$

or 9(3.14)=28.26sqr.units