7. A cylindrical tank can hold 2279.64 cubic feet of water. The radius of the tank is 11 feet. What is the height of the tank?

Mathematics

1 answer:

aliina [53]1 year ago

3 0

Answer:

r = 8.12

Step-by-step explanation:

The volume for a cylinder is V=πr^2h therefore,

v = 2279.64

h = 11ft

r = ?

2279.64 = πr^2 * 11

$\frac{2279.64}{11}= {\pi r^2} \\$

207.24 = πr^2

$\frac{207.24}{\pi} =r^2\\\\66 = r^2\\\\\sqrt{66} = r\\\\\\8.12 = r$

You might be interested in

80 is 40% of what number?

Artist 52 [7]

$x-number\\\\40\%x=80\\\\40\%=\frac{40}{100}=0,4\\\\0,4x=80\ \ |:0,4\\\\x=\frac{80}{0,4}=200\\\\ 80\ is\ 40\% \ of\ 200.$

6 0

2 years ago

Which sequence begins with 1 and follows this rule? multiply by 2 and add 1.

Olin [163]

Change the information into an equation and do sequence. pull out any necessary information.
y = 2x + 1
starts at 1... so your first sequence is 1.
plug in x=1 then it becomes 3. then the next sequence you plug in 3 (, the answer to your previous solve) you get 7. continue to do this. next sequence you plug in x=7 into the equation y = 2x + 1.
thus, y = 2(7) + 1 =15... so forth...
therefore the answer is B.

Hope this helps :)

5 0

2 years ago

A rectangular prism has volume 12x3 − 11x2 − 5x. Which expressions can represent the dimensions of the prism?

Nonamiya [84]

The expressions that can represent the dimensions of the prim is (x), (3x+1) and (4x-1).

3 0

2 years ago

Logan and his friend went out to dinner and spent $18.50.They left a tip of $2.59.

maria [59]

To find this out, use a percent proportion, use cross products, and solve the equation.

$\frac{2.59}{18.50}= \frac{p}{100} \\ 18.50p=259 \\ \frac{18.50p}{18.50}= \frac{259}{18.50} \\ p=14$

So, the percent tip is 14%.

7 0

3 years ago

Please help its urgent! 30 points!

Savatey [412]

Step-by-step explanation:

I think the answer is A.

5 0

3 years ago

Read 2 more answers