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Kobotan [32]
2 years ago
9

A cylinder has a radius of 5 and height of 3. what is the volume

Mathematics
1 answer:
Lapatulllka [165]2 years ago
8 0

Answer:

236 cubic units (to 3 significant figures)

Step-by-step explanation:

volume of a cylinder = \pir²h   (where r = radius and h = height)

Therefore, volume = \pi x 5² x 3

                               = \pi x 25 x 3

                               = 75\pi

                               = 236 cubic units (to 3 significant figures)

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Answer:

1. x = 5, y = 13/2

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Step-by-step explanation:

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Divide equation 2 by 2:

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Divide equation 2 by 2:

{3 x + 2 y = 28 | (equation 1)

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_____________________________________

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{8 y + 3 x = 237 | (equation 1)

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{5 x + 3 y = 147 | (equation 1)

{3 x + 8 y = 237 | (equation 2)

Subtract 3/5 × (equation 1) from equation 2:

{5 x + 3 y = 147 | (equation 1)

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Multiply equation 2 by 5/31:

{5 x + 3 y = 147 | (equation 1)

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{5 x + 0 y = 75 | (equation 1)

{0 x + y = 24 | (equation 2)

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{x + 0 y = 15 | (equation 1)

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Collect results:

Answer: {x = 15 , y = 24

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