Question

An iron pipe 21m long with internal diameter 14m,has a thickness of 1.5m.Calculate the weight of the pipe if 1mcube of it weighs 5.5g

Answer 1

hi mates

your answer

length of pipe=21m

d=14m

r=d/2 or 14/2=7

h=1.5m

volume of pipe=πr2h

$= 22 \div 7 \times 7 \times 7 \times 1.5 \\ = 231 mcube$

$1mcube = 5.5g \\ 231mcube = 231 \times 5.5g = 1270.5g$