A cylinder of diameter 10 cm and a height of 20 cm is filled with water. If a sphere of diameter 10 cm is completely submerged inside the cylinder, what will be the increase in the level of water, in the cylinder?

3.33 cm

6.67 cm

8.33 cm

Cannot be determined

Correct Answer : C

simplifies to

If ax +by + c = 0 and dx + ey + f = 0 represent the same straight line then which of following is necessarily satisfied?

A rhombus has sides 10cm each and the circle that is inscribed in it has radius 1.5cm. What is the area of the rhombus in cm^{2}