A rectangular pipe has cross section inner dimensions of 2cm and 4cm. If water flows at the rate of 15cm/s
a) What is the time the pipe will take to fill a cylindrical bucket of radius 60 cm and volume 15l?
b) If the pipe is joined to a cylindrical pipe of diameter 2cm, what will be the speed of flow in the cylindrical pipe?
c) If the cylindrical pipe is made of Galvanised Iron (GI pipe) where the metal is 2.5 mm thick, calculate the volume of GI used in a 6m length of pipe.
d) What is the weight of such a pipe if the density of iron is 7.87g/cm3.
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Step-by-step explanation:
ANSWER:
Given data is as follows:
(i) For tin can with rectangular base:
Length = 5 cm
Width = 4 cm
Height = 10 cm
(ii) For plastic cylinder with circular base
Diameter = 7 cm
Height = 10 cm
We have to find out which container has greater capacity and also the difference in their capacities.
(i) Volume of tin can =
=
=200
(ii) Volume of cylinder =
Diameter is given as 7cm. Therefore, r =
Volume of cylinder =
= 385 cm3
From the above it can be concluded that plastic cylinder has greater capacity.
Difference in their capacities = 385 – 200 = 185 cm3
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