Find the number of diagonals of a regular polygon, sum of whose interior angles is 2700⁰.

A conical vessel, whose internal radius is 20 cm and height is 27 cm, is full of water. If this water is poured into a cylindrical vessel with internal radius 15cm, what will be the height to which the water rises in it?

What is the total surface area of a cylinder having radius of base as 7 cm and height as 5 cm?

If the total surface area of a sphere of radius r cm is equal to the total surface area of a cube of side s cm, which of the following is true?

What is the volume of the largest sphere that can be carved out of a wooden cube of side 21 cm?π

The base of a triangle is 16 cm and its area is . Find its corresponding height, with respect to the given base.

What is the total surface area of a pyramid whose base is a square with side 8 cm and height of the pyramid is 3 cm? 

What is the height (in cm) of an equilateral triangle whose each side is 8 cm?