For the following questions answer them individually
The least number of square tiles of side 41 cms required to pave the ceiling of a room of size 15m 17cm long and 9m 2 cm broad is:
The average of fruits offered in a temple in a week was 75. The average of fruits offered in six days excluding Tuesday was 72. How many fruits were offered on Tuesday?
PR is a tangent to a circle with centre O and radius 4 cm at point Q. If ∠POR = 90°, OR = 5 cm and OP = 20/3 cm, then the length of PR is:
From a point, 40 m apart from the foot of a tower, the angle of elevation of its top is 60°. The height of the tower is
The radius of a sphere and hemisphere are same. The ratio of their total surface area is