Question

find the volume in cubic cm of km of circular cable of radius 0.1 cm​

Answer 1

FINAL ANSWER:-

$VOLUME=3140cm^{3}$

GIVEN:-

1 km of circular cable of radius 0.1 cm​

TO FIND:-

find the volume in cubic cm

FORMULAS USED:-

$volume \:of \:cylinder= \pi r^{2} h$

SOLUTION:-

as cable is in 1 km so first change it into cm

so $1 km = 1000 m$ and $1 m = 100cm$

$1 km$ = $1000*100 =100000cm$

here

$h=100000cm\\r=0.1cm$

$volume \:of \:cylinder\:(cable)= \pi r^{2} h\\=3.14*0.1*0.1*100000\\=3140cm^{3}$

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some more important formulas:-

$volume \:of \:cylinder= \pi r^{2} h\\volume\:of\:hemisphere=\frac{2}{3} \pi r^{3}\\volume\:of\:sphere=\frac{4}{3} \pi r^{3}\\volume\:of\:cone=\frac{1}{3} \pi r^{2} h\\volume\:of\:cube=s^{3}\\volume\:of\:cuboid=l*b*h$

Answer 2

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