Using the method of integration show that area of circle is ` pi R^(2)` .

Using the method of integration show that the area of triangle of base b and altitude h is 1/2bh .

Using the method of integration show that the area of triangle of base b and altitude h is 1/2bh .

Using the method of integration, show that the volume of a right circular cone of base radius r and height h is V=1/3pir^2h .

Using the method of integration, show that the volume of a right circular cone of base radius r and height h is V=1/3pir^2h .

Using the method of integration, find the area of the triangular region whose vertices are (2,-2),(4,3) and (1,2).

Using the method of integration, find the area of the triangular region whose vertices are (2,-2), (4,3) and (1,2).

Using the method of integration find the area of the triangle ABC, coordinates of whose vertices are A(2,0),B(4,5) and C(6,3) .

Using the method of integration find the area of the triangle ABC, coordinates of whose vertices are A(2, 0) , B (4, 5) and C(6, 3).