Question

一个圆柱形的油桶底面直径是4dm高5dm每升汽油重0.75kg可装多少kg汽油

Answer 1

圆桶的体积为:

V=πR^2H

=π?(D/2)^2?H

=3.14?(4/2)^2?5

=62.83立方分米.

可装汽油重量为:

体积?密度,即

62.83?0.75=47KG