A cylindrical metal pipe has a diameter of 20 millimeters and a height of 21 millimeters. A cylindrical hole cut out of the cent
er has a radius of 6 millimeters.
Which expressions represent the volume of metal needed, in cubic millimeters, to make the pipe? Check all that apply.
21π(10)2 – 21π(6)2
π(20)2(21) – π(6)2
2,100π – 756π
7,644π
1,344
Answer is choice 1 and 3.
Which expressions represent the volume of metal needed, in cubic millimeters, to make the pipe? Check all that apply.
21π(10)2 – 21π(6)2
π(20)2(21) – π(6)2
2,100π – 756π
7,644π
1,344
Answer is choice 1 and 3.
2 answers:
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