the volume of a 1 metre iron rod is 1386cu.cm. find its diameter
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solution:-
h=1m
h=100cm
volume of iron rod=πr²h
1386=22/7×r²×100
1386×7/22×100=r²
63×7/100=r²
441/100=r²
√441/100=r
r=21/10
r=2.1
d=2r
d=2×2.1
d=4.2cm
hope this answer will help you.
h=1m
h=100cm
volume of iron rod=πr²h
1386=22/7×r²×100
1386×7/22×100=r²
63×7/100=r²
441/100=r²
√441/100=r
r=21/10
r=2.1
d=2r
d=2×2.1
d=4.2cm
hope this answer will help you.
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