Question No : 8
A cube of edge 15 cm is immersed completely in a rectangular vessel containing water. If the dimensions of the base of vessel are 20 cm x 15 cm, find the rise in water level.
Question No : 9
Three solid cubes of sides 1 cm, 6 cm and 8 cm are melted to form a new Cube. Find the surface area of the cube so formed.
Question No : 10
Two cubes have their volumes in the ratio 1 : 27. Find the ratio of their surface areas.
Question No : 11
How many iron rods, each of length 7 m and diameter 2 cm can be made out of 0.88 cubic meter of iron?
Question No : 12
A conical vessel, whose internal radius is 12 cm and height 50 cm, is full of liquid. The contents are emptied into a cylindrical vessel with internal radius 10 cm. Find the eight to which the liquid rises in the cylindrical vessel.