Mathematics
The cross-section of a piece of metal 4 m in length is shown below. Calculate :
(i) the area of the cross-section;
(ii) the volume of the piece of metal in cubic centimetres.
If 1 cubic centimetre of the metal weighs 6.6 g, calculate the weight of the piece of metal to the nearest kg.
Related Questions
Water is discharged from a pipe of cross-section area 3.2 cm2 at the speed of 5m/s. Calculate the volume of water discharged :
(i) in cm3 per sec.
(ii) in litres per minute.
A hose-pipe of cross-section area 2 cm2 delivers 1500 litres of water in 5 minutes. What is the speed of water in m/s through the pipe ?
A rectangular water-tank measuring 80 cm x 60 cm x 60 cm is filled from a pipe of cross-sectional area 1.5 cm2, the water emerging at 3.2 m/s. How long does it take to fill the tank?