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3 years ago

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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Alexandra bought a hat that costs 14 dollars and a watch that costs 6 dollars. At the counter she received a discount. If she pa

leonid [27]

Answer:

It was a 25% discount

Step-by-step explanation:

25 percent of 20 is 5. You subtract 5 from 20 and get 15.

I hope this helps.

6 0

3 years ago

Jessica made $95 for 5 hours of work.

poizon [28]

Answer:

$247

Step-by-step explanation:

95/5= 19 to find rate per unit which means,

Jessica makes $19 dollars a hour.

19 x 13= $247

So Jessica made $247 in 13 hours of work.

8 0

3 years ago

Read 2 more answers

(04.02 MC)<br> Solve the system of equations.<br> 5x + y = 9<br> 3x + 2y = 4

goblinko [34]

Answer:

(2,-1)

Step-by-step explanation:

Multiply first equation by 2:

10x + 2y = 18

Subtract the second equation from this so that the 2y terms cancel:

10x - 3x = 18 - 4

7x = 14

x = 2

Plug into first equation to find y:

5(2) + y = 9

10 + y = 9

y = -1

The answer is (2,-1)

7 0

4 years ago

Read 2 more answers

Find the product of 4cis (pi/4) times 5cis (pi/6) in polar form.

KengaRu [80]

We have the following expression

$4\cdot\text{cis(}\frac{\pi}{4})\cdot5\text{cis(}\frac{\pi}{6})$

This is equivalent to

$4\cdot\text{cis(}\frac{\pi}{4})\cdot5\text{cis(}\frac{\pi}{6})=(4\times5)cis(\frac{\pi}{4}+\frac{\pi}{6})$

Since

$\frac{\pi}{4}+\frac{\pi}{6}=\frac{6\pi+4\pi}{24}=\frac{10}{24}\pi=\frac{5}{12}\pi$

we have that

$4\cdot\text{cis(}\frac{\pi}{4})\cdot5\text{cis(}\frac{\pi}{6})=20cis(\frac{5\pi}{12})$

Therefore, the answer is the second option from top to bottom.

3 0

1 year ago

Solve y+1=-3/4 (x+2) and y-3= 2/3 (x-4) please show how you solve it

VashaNatasha [74]

Answer:

y = -3/4x-5/2 and y = 2/3x-1/3

Step-by-step explanation:

y+1 = -3/4(x+2)

y+1 = -3/4x-3/2

y = -3/4x-3/2-1

y = -3/4x-5/2

-----

y-3 = 2/3(x-4)

y-3 = 2/3x-8/3

y = 2/3x-8/3+3

y = 2/3x-1/3

7 0

3 years ago