Surface area of each base `= pi ( R^2-r^2)` sq. units.

Curved (lateral) surface area = (External surface areal) (Internal surface area)= 2 pi Rh+2 pi rh=2 pi h(R+r)sq. units.

Two similar cones have volumes 12 pi cm. inits and 96 pi cm .units.If the curved surface area of the smaller cone is 15 pi sq. units.What is the curved surface area of the larger one?

If the total surface area of a cube is 6 sq units, then what is the volume of the cube?

If the lateral surface area of a cylinder is 94.2 sq cm and its height is 5 cm, then find the radius of its base. ( pi = 3.14)

The total surface area of a cylinder of base radius r and height h is______.

The curved surface area of a cone of base radius r and height h is_______.

If the parabola y=(x^(2))/(2) divides the circle x^(2)+y^(2)=8 into two parts,then the area of the parts may be (A) 6 pi+(4)/(3) sq.units (B) 2 pi-(4)/(3) sq.units (C) pi+(4)/(3) sq.units (D) 6 pi-(4)/(3) sq.units

Asolid cone of radius r and height h is placed over a solid cylinder having same base radius and height as that of a cone,. The total surface area of the combined solid is pi [sqrt(r^(2) + h^(2)) +3r +2h]

Total surface area =(2 pi rh+2 pi r^(2)) sq.

Let A B C be a triangle of area 24sq. units and P Q R be the triangle formed by the mid-points of sides of A B Cdot Then the area of P Q R is 12 sq. units (b) 6 sq. units 4 sq. units (d) 3 sq. units