Freshers India

How many bricks, each measuring 25 cm x 11.25 cm x 6 cm, will be needed to build a wall of 8 m x 6 m x 22.5 cm?                        

How many cubes of 10 cm edge can be put in a cubical box of 1 m edge?                        

How many cubes of 3 cm edge can be cut of a cube of 18 cm edge?                        

How many iron rods, each of length 7 m and diameter 2 cm can be made out of 0.88 cubic metre of iron?                        

How many spherical bullets can be made out of a lead cylinder 28 cm high and with base radius 6 cm, each bullet being 1.5 cm ub duaneter?                        

If 1 cubic cm of cast iron weighs 21 gms, then find the eight of a cast iron pipe of length 1 metre with a bore of 3 cm and in which thickness of the metal is 1 em.