If ax +by + c = 0 and dx + ey + f = 0 represent the same straight line then which of following is necessarily satisfied?
Correct Answer : B
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 cm2
To comfortably sit in a room, every girl must be allowed a floor space of 2 sq.m. and air space of 5.5 cubic metres. Fifty girls are to be seated comfortably in a room 10m. long. What should be its height?