Find the length of the altitude of an equilateral triangle whose sides have a length of 3√3 units.
Correct Answer : C
A metallic cuboid has dimensions of 9cm × 10cm × 11cm. How many spherical balls of radius 0.3 cm, can be drawn from this cuboid?
If ax +by + c = 0 and dx + ey + f = 0 represent the same straight line then which of following is necessarily satisfied?