A fish tank is in the form of a cuboid, external measures of that cuboid are `80 cm times 40 cm times 30 cm`. The base, side faces and back face are to be covered with a coloured paper. Find the area of the paper needed.

The dimensions of a metallic cuboid are 44 cm times 42 cm times 21cm. It is molten and reacast into a sphere. Find the surface area of the sphere.

Solve the following (Any 2) Total surface area of a cuboid is 400 cm. Height of the cuboid is 20 cm. Find the perimeter of the base of the cuboid.

The three faces, A, B, C having a common vertex of a cuboid have areas 450 cm^2 , 600 cm^2 and 300 cm^2 respectively. Find the volume of the cuboid.

Oil tins of cuboidal shape are made from a metallic sheet with length 8 m and breadth 4 m. Each tin has dimensions 60 times 40 times 20 in cm and is open from the top. Find the number of such tins that can be made?

The dimensions of a cuboid in cm 30xx18xx10 . Find its volume.

Volume of a soild with uniform cross-sectional area is given by area of base times height . Find the volume of a hexagonal prism whose base has each side measuring 6 cm and height is 4/sqrt3 cm. ( Hint: Area of regular hexagon = 3sqrt3/2 times side^2 )