A mound of soil is piled up into a cone of base diameter 1.8m and height 0.6 m. What is the volume of soil?
- 0.5 m^3
- 1.0 m^3
- 1.5 m^3
Explanation from PART66Online
A cone's volume is (1/3)*pi*r^2*h. The radius is half the 1.8 m diameter, so r = 0.9 m; then (1/3)*pi*0.9^2*0.6 = (1/3)*pi*0.81*0.6 which is about 0.51, rounding to 0.5 cubic metres. Omitting the 1/3 factor would roughly triple the answer.
D
Drewgal asked · 17 Apr 2019
how ? please
Community Comments (2)
D
Dzenis
15 Jun 2019
1/3*pi*(diameter/2)^2*0.6=1/3*3.14*0.9*0.9*0.6=0.5
A
avi1234
21 Aug 2019
jpt
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