A metal railing has the cross section shown below (i.e. a parrial circle ptus 3 streight aldes). a) If 1 section is
5.5m
long, find the lateral surfoce area in
mm^(2)
and
m^(2)
. b) If 500 such sections are to have their lateral surfoce areas pointed with 0.15 mmm thick coating, what volume (in
m^(3)
and litres) of point is required?

Question

A metal railing has the cross section shown below (i.e. a parrial circle ptus 3 streight aldes). a) If 1 section is

5.5m

long, find the lateral surfoce area in

mm^(2)

and

m^(2)

. b) If 500 such sections are to have their lateral surfoce areas pointed with 0.15 mmm thick coating, what volume (in

m^(3)

and litres) of point is required?

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