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terrieldixon
20.03.2020 •
Mathematics
Plz help people I have been struggling
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Answers on questions: Mathematics
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Ответ:
3. 42.41 in^2
4. 21.21 in^3
Step-by-step explanation:
So for #3 it is basicly asking for the surface area and the formula for that is 2πrh+2πr^2.
So r is the radius and h is the height. The radius is 1.5 because at the top it says the diameter is 3 and the radius is half the diameter.
Then the height is 3 inches.
so if you plug the radius and height into r and h you get 42.41 in^2.
For number 4 it is asking for the volume.
The formula for volume is πr^2h.
The r is the radius and the h is the height.
The radius is 1.5 and the height is 3.
If you plug those in you get 21.21 in^3.
Ответ:
yeah so 2+4+5x243=413
Step-by-step explanation:
2+4
5x243
413