" Q 7.Using integration,find the area enclosed by the circle "x^(2)+y^(2)=a^(2)

Find the area enclosed by the circle x^(2)+y^(2)=r^(2)

Find the area enclosed by the circle x^(2)+y^(2)=25

Find the area enclosed by the circle x^2+y^2=2

Find the area enclosed by the circle x^2 + y^2 =1.

Find the area enclosed by the circle x^2+y^2=9 .

Find the area enclosed by the circle x ^(2) +y ^(2) =9.

Using integration, find the area of the circle x^(2)+y^(2)=4

Find the area enclosed by the circle : x^2 + y^2 = 25 .

Using the method of integration, find the smaller area enclosed by the circle x^(2)+y^(2)=4 and the line x+y=2.