Find the area of triangle whose medians are 8 cm, 15 cm and 17 cm respectively?

The ratio of the areas of two isosceles triangles having the same vertical angle is 1 : 9.The ratio of their heights is -

How much parts of the pits, which are 48 meters long, 16.5 meters wide and 4 meters deep, can be filled in the soil, which is obtained by cylindrical tunnel of 4 meters diameter and 56 meters long?

Find the area of a white sheet required to prepare a cone with a height of 21cm and the radius of 20cm.

The length of a hollow thick cylindrical metallic pipe is 6 cm and its total surface area including the surface at the ends is 98π sq. cm. If the outer diameter is 8 cm, then the inner diameter in cm is 

The area covered by a square is 308 square cm. The length of the diagonal of the square is.

A shuttlecock used of playing badminton has the shape of a frustum of a cone mounted on a semi sphere. The external diameters of the frustum are 5 cm and 2 cm, the height of the entire shuttlecock is 7 cm. The external surface is of the shuttlecock is:

The volume of a cube is $$ 512{cm}^{3}$$. Its surface area (in sq cm) is