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elena-s [515]
3 years ago
14

Can someone help me with this fast please? Thank You

Mathematics
1 answer:
egoroff_w [7]3 years ago
6 0
The answer is 3/10


Explaintion
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Which expression represents the volume, in cubic units, of the composite figure?
Kipish [7]

The missing figure is attached

The expression represents the volume in cubic units of the composite figure is (Four-third)π(10)³ + π(10)²(28) ⇒ 1st answer

Step-by-step explanation:

The figure consists of

  • Two hemispheres
  • A cylinder

The volume of the hemisphere = \frac{2}{3}\pi r^{3} , where r is its radius

The volume of the cylinder = πr²h, where r is its radius and h is its height

∵ The diameter of the hemisphere s and the cylinder is 20 units

∵ The radius = \frac{1}{2} diameter

∴ The radius = \frac{1}{2} × 20 = 10 units

∵ The volume of a hemisphere = \frac{2}{3} πr³

∵ r = 10

- Substitute r by 10 in the rule

∴ The volume of a hemisphere = \frac{2}{3} π(10)³

∵ The volume of the cylinder = πr²h

∵ h = 28 and r = 10

- Substitute h by 28 and r by 10 in the rule

∴ The volume of the cylinder = π(10)²(28)

∵ The volume of the figure = 2(volume of a hemisphere) +

   volume of the cylinder

∴ The volume of the figure = 2( \frac{2}{3} )π(10)³ + π(10)²(28)

∵ 2 × \frac{2}{3} = \frac{4}{3}

∴ The volume of the figure = \frac{4}{3} π(10)³ + π(10)²(28)

The expression represents the volume in cubic units of the composite figure is (Four-third)π(10)³ + π(10)²(28)

Learn more:

You can learn more about the volume of figures in brainly.com/question/12497249

#LearnwithBrainly

7 0
3 years ago
Read 2 more answers
If p(x) = x 2 + 7x + 3 is divided by x + 4, the remainder is ?
kow [346]
I hope this helps you

3 0
4 years ago
ILL GIVE YOU BRAINLIEST PLEASE!!!<br> this is all my points
Umnica [9.8K]

Answer:8(10+2)

8(10+2)

8×10=80

8×2=16

I hope this is good enough:

7 0
3 years ago
PLEASE ANSWER THIS AS SOON AS POSSIBLE.
kati45 [8]
There are 76200000 or 762 x 10^5 more people in Mexico than Canada.
4 0
2 years ago
Each U.S. penny weighs 2.5 grams. How many pennies (x) are on a scale if their total weight is 37.5 grams
iris [78.8K]
All you need to do is divide 37.5 by 2.5. So 37.5/2.5 = 15. Then check your answer and do 2.5 * 15 = 37.5. So the answer is 15 pennies.
6 0
3 years ago
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