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DerKrebs [107]
3 years ago
7

A cone with a radius of 6 cm has a volume of 1200 cm3. What is the height of the cone? (The volume of a cone is given by the for

mula V = 7er A) 8 cm B) 10 cm 12 cm D) 15 cm​
Mathematics
2 answers:
Gwar [14]3 years ago
7 0
  • A cone with a radius of 6 cm has a volume of 1200 cm³. What is the height of the cone?(The volume of a cone is given by the formula V = 7er)

  1. A) 8 cm
  2. B) 10 cm
  3. C) 12 cm ✔️✅✔️
  4. D) 15 cm

  • <em>HOPE</em><em> IT</em><em> WILL</em><em> HELP</em><em> YOU</em>
Rina8888 [55]3 years ago
5 0

Answer:

  • 31.8 cm

Step-by-step explanation:

<u>Volume of a cone:</u>

  • V = 1/3πr²h

<u>We have:</u>

  • V = 1200 cm³
  • r = 6 cm
  • h = ?

<u>Substitute values and solve for h:</u>

  • 1200 = 1/3*3.14*6²h
  • 1200 = 37.68h
  • h = 1200/37.68
  • h = 31.8 cm (rounded)

None of the choices is correct

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The rate of interest on three accounts are 7%, 8%, 9%.

She has twice as much money invested at 8% as she does in 7%.

She has three times as much at 9% as she has at 7%.

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To find:

Amount invested on each rate.

Solution:

Let x be the amount invested at 7%. Then,

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The amount invested at 9% = 3x

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Multiply both sides by 100.

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Divide both sides by 50.

x=\dfrac{15000}{50}

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The amount invested at 9% is

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3 years ago
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Ulleksa [173]
<h3>Answer:   4/9</h3>

==============================================

Work Shown:

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