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3 years ago

A cylinder has a base diameter of 8 feet and a height of 7 feet. What is its volume in cubic feet, to the nearest tenths place?

Mathematics

1 answer:

sveticcg [70]3 years ago

6 0

Answer:

351.9 ft³

Step-by-step explanation:

The volume of a cylinder is given by the following expression:

$V=h*\pi \frac{d^2}{4}$

Where "h" is the height of the cylinder and "d" is the diameter of the base.

The volume of this particular cylinder is:

$V=7*\pi \frac{8^2}{4}\\V=351.9\ ft^3$

The volume of the cylinder is 351.9 ft³.

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olga nikolaevna [1]

Answer:

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Step-by-step explanation:

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3 years ago

A semicircle has an area of 76.97 squared km. Find it’s radius

shtirl [24]

Answer:

7 km

Step-by-step explanation:

Substitute:

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Multiply by 2 on both sides:

2(76.97) = ( $\frac{r^{2}\pi }{2}$ )2

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Divide by pi on both sides:

153.94 = $r^{2} \pi$

/pi /pi

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3 years ago

Please help me!!! will give brainlists!

Varvara68 [4.7K]

You have a rectangular prism on your hands. The formula for the volume of a rectangular prism is

(B/2) • l

Where B is the area of the base, and l is the length.

If you notice, you do NOT have the height of the triangle. However, you know that it is an equilateral triangle. So, you may split the triangle into two. Once you do, you can see that it is a right triangle. It’s hypotenuse is 3. If you know your triangles, you will realize that this is a 30 60 90 triangle. Therefore, the height will be 1.5 * sqrt(3)

So, to get B...

3 * 1.5sqrt(3)
4.5sqrt(3)
(Divide by 2)
2.25sqrt(3)
O
(9sqrt(3))/4
Multiply by the length of the prism, 6

This is your final answer in fraction form

27
— 2^rt(3)
2

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3 years ago

How do you recongnize functions?

natta225 [31]

Answer:

That is not a function :)

Step-by-step explanation:

You can recognize functions by seeing if it passes the vertical line test. If you draw a vertical line anywhere are the grid and it crosses the equation in more then one place then it does not pass the test, and is not a function.

Here's an attachment that might help

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2 years ago

Read 2 more answers

The machinist's goal was to increase his production by at least 10% each day. Assume he achieved his goalIf he was able to machi

Semmy [17]

25 x 0.1 = 2.5 ≈ 3

25 + 3 = 28

The machinist would make about 28 on Wednesday

7 0

3 years ago