James try to make spheres out of clay. A box of clay contains 25 packs. Each pack is a cuboid measuring 10 cm by 10 cm by 4 cm (i.e length, breadth and height respectively). (a) How many spheres of radius 6 cm can Jack make from a box of clay? (Hint : First find the volume of the clay) (b) A pack of clay has a mass of 500 grams. Work out the density of the clay.
A solid which has six rectangular faces at right angles to each other.