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2 years ago

Help please! math volumes

Mathematics

1 answer:

salantis [7]2 years ago

6 0

Answer:

980.18 cm^3

Step-by-step explanation:

Volume of cylinder w/out spheres = pi r^2 h

= pi 8^2 *6

now subtract the volume of the TWO spheres

2 * 4/3 pi * 3^3

for result = 980.18 cm^3

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fgiga [73]

3.49 times I did the math and checks it so I'm right I believe

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3 years ago

Read 2 more answers

It will take Adam four hours to drive to Disney Park, and 2.5 times less time if driving 45 mph faster. What is the distance Ada

Butoxors [25]

<h2>Hello!</h2>

The answer is:

The distance that Adam should cover to get to the park is 108 miles.

To solve the problem, we need to write two equations with the given information about the times and his speed.

So,

For the first equation we have: Going to Disney Park

$time=4hours$

$Distance=v*4hours$

For the second equation we have: Going back from Disnery Park

$time=4hours-2.5hours=1.5hours$

$Speed=v+45mph$

$Distance=(v+45mph)*1.5hours$

Now, if He covered the same distance going and coming back, we have:

$v*4hours=(v+45mph)*1.5hours$

$v*4hours=v*1.5hours+45mph*1.5hours$

$v*4hours-v*1.5hours=45mph*1.5hours$

$v*2.5hours=67.5miles$

$v=\frac{67.5miles}{2.5hours}=27\frac{miles}{hour}=27mph$

We have that the speed when Adam was going to Disney Park was 27 mph.

Therefore, to calculate the distance, we need to substitute the obtained speed in any of the two first equations.

Then, substituting the speed into the first equation, we have:

$Distance=v*4hours\\Distance=27mph*4hours=108miles$

Hence, we have that the distance that Adam should cover to get to the park is 108 miles.

Havea nice day!

6 0

2 years ago

17) Find DE<br> 3r - 28<br> 3r - 30<br> x<br> D<br> G<br> 33<br><br><br> help asapp !!!

saw5 [17]

Answer:

11=DE

Step-by-step explanation:

3x-28+3x-30+x=33

7x-58=33

7x=91

x=13

3(13)-28

39-28=11

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2 years ago

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igomit [66]

The answer is simple just multiple 6x8 and you get 48

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3 years ago

Amber built a large rectangular garden that is 9 meters long and had an area of 72 square meters, what is the perimeter of amber

drek231 [11]

So we know that the length of the rectangle is 9 meters.

In order to find area of a rectangle, you multiply the length by the width.

To find the width, you divide the area by the side you do have , which is 9 meters.

72 divided by 9 is 8.

So the width 8 meters, and now to find the perimeter you must add all sides of the rectangle.

9+9+8+8 = 34.

The perimeter of the rectangular garden is 34 meters.

7 0

3 years ago