How many silver coins 1.75 cm in diameter and of thickness 2 mm, must be melted to form a cuboid of dimensions `5.5 cm xx 10 cm xx 3.5 cm` ?

Find the volume of a cuboid with dimensions 10 cm xx 8 cm xx 6 cm.

How many lead shots each 0.3 cm in diameter be can made from a cuboid of dimension 9 cm xx 11 cm xx 12 cm ?

Find the surface are of the cuboid whose dimensions are 40 cm xx 25 cm xx 8 cm.

The paint in a certain container is sufficient to paint an area equal to 9.375 m^2 . How many bricks of dimensions 22.5 cm x 10 cm x 7.5 cm can be painted out of this container ?

How many cuboids of sides 6cm xx 3cm xx 6cm will be needed to form a cube

Add 6.75 xx 10^3 cm to 4.52 xx 10^2 cm

Give (i) an oblique sketch and (ii) an isometric sketch for each of the following:An isometric sheet is attached at the end of the book. You could try to make on it some cubes or cuboids of dimensions specified by your friend. A cuboid of dimensions 5 cm, 3 cm and 2 cm. (Is your sketch unique?)

If a parabolic reflector is 20 cm in diameter and 5 cm deep, find the focus.