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(ii) Area of the whole surface of a right prism = Area of the lateral faces + 2 × area of the base.

(iii) Volume of a right prism = area of the base × height.

● Pyramid: (i) Area of the lateral faces of a right pyramid = (1/2) × perimeter of the base x slant height.

(ii) Area of whole surface of a right pyramid = area of the lateral faces + area of the base.

(iii) Volume of a right pyramid = (1/3) × area of the base × height.

● Tetrahedron: If a be the length of an edge of a regular tetrahedron then

(i) the area of its slant sides = (3√3/4)a2 sq. units;

(ii) the area of its whole surface = √3a2 sq. units

(iii) the volume of the tetrahedron = (√3/12)a3 cu. units.