Asked by Jessica

A plumber installs a pipe that has a diameter of 10 cm and a length of 2.4m, Calcualte the volume of water(in cm3) that the pipe will hold. Express your answer to the correct number of significant digits.
Note: The formula for the volume of a cylinder is V=Pi(r)2h, where r is the radius and h is the height or length

i think the answer will be 188.4 cm3
Answered by DrBob222
I don't think so. I believe you multiplied by 2.4m and not 240 cm. Also I don't think you rounded off to the right number of significant figures.
Answered by Jessica
would the answer be 18840cm3
Answered by DrBob222
The digits are right but the number of s.f. is not. If I read the question properly when you take 1/2 of 10 to find radius that leaves you just one s.f. and one is all you can have in the answer. If that is 10.0 things would be different. If the 10 is correct I think the answer must be rounded to 2E4 cc.
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