The length, breadth and height of a wooden-box are 20 cm, 12 cm and 10 cm respectively. If the thickness of the wooden-box be 17 cm, then what volume of wood will be required to make the box ?

If the height and slant height of a cone are 6 cm and 10 cm respecitvely. Then determine the total surface area and the volume of the cone.

The radius of base and the height of a right circular are 3 cm and 5 cm respectively . How many cones of radius 1 milimetre and of height 1 cm can be made by melting the cyllinder ?

A toy is in form of a cone mounted on a hemisphere on the same diameter . The diameter of the base and the height of the cone are 6 cm and 4 cm respectively. Determine the surface area of the toy . [use pi= 3.14 ]

The length of base diameter and height of a right circular cone are 16 cm and 17 cm respectively. Find the volume of the cone.

The diameter and height of a narrow cylindrical vessel are 10 cm and 15 cm respectively. The vessel contains 200cm^(3) of water and the mass of the vessel is 114 g. The vessel is then placed inside a large vessel and water is poured into it. For what maximum level-height of water in the large vessel, will the cylindrical vessel just float up?

The length , breadth and height of a rectangular paralelopiped are 11 cm , 9 cm and 6 cm respectively . How many coins of diameter 3 cm and height 1/4 cm can be made from this rectangular paralelopiped ?

Average height & variance of 5 students in a class is 150cm and 18cm^2 respectively. A new student whose height is 156 cm is added to the group. Find new variance(in cm). (a) 20 (b) 22 (c) 16 (d) 14

The length of outer and innner diameter of a hollow right circular cylinder are 16 cm and 12 cm respectively and height of cylinder is 36 cm. how many solid cylinders of 2 cm radius and 6 cm length may be obtained by melting this cylinder.

The height of three right circular cones of radii 3 cm , 4 cm and 5 cm respectively is 10 cm . If a large metal cone of diameter 20 cm is made by melting those three small cones , then what will be the height of the large cone ?