SOLUTION: (P4) Calculate: a) i) The volume of concrete needed for a 2.5 m long circular pipe with 400 mm external diameter with a 30 mm wall thickness. ii) Internal surface a

Question 1151172: (P4)
Calculate:
a) i) The volume of concrete needed for a 2.5 m long circular pipe with 400 mm external diameter
with a 30 mm wall thickness.
ii) Internal surface area.
iii) If this surface is to be given 2 coats of a waterproofing coating which is made up in a ratio of
3 parts waterproofing additive to 1 part water. Calculate the amount of additive needed if
the coverage is 5 metres/litre.
b) Calculate the volume (M3) and surface area (M2) of a solid sphere of radius 45cm.
c) Calculate the volume and total surface area of a cone of vertical height 0.3m and diameter 35cm.

Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Calculate:
a) i) The volume of concrete needed for a 2.5 m long circular pipe with 400 mm external diameter
with a 30 mm wall thickness.
---------------
Find the volume length 250 cm and 20 cm radius.
Subtract the volume 250 cm length and 17 cm radius.
---> concrete in cubic cms (cc's)

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