places A and B are 30 km apart and they are on a straight road. Hamid travels from A to B on bike. At the same time Joseph starts from B on bike, travel towards A . They meet each other after 20 minutes. If Joseph would have started from...
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the diameter of a circular cone is 8 cm and its volume is 33 centimetre cube find its height
the diagonals of a rhombus are 6 cm and 8 cm respectively. find the perimeter of the rhombus.
a solid metallic sphere of radius 4 cm is melted. how many small spheres of radius 1 cm can be obtained from the metal.
the radius of a sphere is doubled what will happen to its volume