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iogann1982 [59]
3 years ago
7

What is the volume of a cylinder with a base radius of 2 and height of 6 ?

Mathematics
2 answers:
vodomira [7]3 years ago
8 0

Answer:

V = 24pi

or 75.36 ( using 3.14 for pi)

or 75.39822369 ( using the pi button)

Step-by-step explanation:

The volume of a cylinder is given by

V = pi r^2 h

We know the radius and the height

V = pi (2)^2 * 6

V = pi 4*6

V = 24 pi

If we approximate pi by 3.14

V = 3.14 * 24 = 75.36

If we use the pi button

V =75.39822369

sergey [27]3 years ago
6 0

Answer:

Step-by-step explanation:

V=pi r^2 h

r = 2

h = 6

V = 3.14 * 2 * 2 * 6

V =75.36

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A metalworker has a metal alloy that is 15​% copper and another alloy that is 60​% copper. How many kilograms of each alloy shou
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<u>Step-by-step explanation:</u>

Let x = kg of 15% copper alloy

Let y = kg of 60% copper alloy

Since we need to create 90 kg of alloy we know:

x + y = 90

51% of 90 kg = 45.9 kg of copper

So we're interested in creating 45.9 kg of copper

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but

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substituting that value in for x

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Therefore, in order to create 90kg of 51% alloy, we'd need 18 kg of 15% copper and 72 kg of 60% copper.

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