Question

if the area of two concentric circles are 5 cm and 4 cm what is the area between the two circle

Answer 1

Hello friend,area of circle is=πr2

So area of circle with radius 5cm=22/7*5^2

=78.54 cm sq

Similarly the area of a circle with radius 4 cm will be=50.27cm sq

Now to find the area between the two circles =area of circle 1-area of circle 2

=78.54-50.27=28.27 cm sq

Therefore the area between the two circle is 28.27 cm sq

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