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3241004551 [841]
2 years ago
8

What is volume of a cylinder with base area 64πcm2 and a height equal to twice the radius? Give your answer in terms of π

Mathematics
1 answer:
bagirrra123 [75]2 years ago
3 0

Answer:

1024π

Step-by-step explanation:

<em>Took a quiz, got this answer right.</em>

<u>Here are the steps anyways:</u>

64π cm² is the base area

The height is equal to twice the radius

<h3>Volume of a Cylinder: V=B×h/V=πr²×h</h3>

1. Find radius: √64 (Which is 8)

2. Double the radius, 8×2=16

3. Multiply 16 and 64π, 16×64π=1024π

hopefully this was understandable, first time answering a question

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netineya [11]

Answer:

Choice A. P = I² · R where

  • P is the power in the DC circuit,
  • I is the current through the circuit, and
  • R is the total resistance of the circuit.

Step-by-step explanation:

Electrical power is the rate at which the electrical force does work. So what is electrical work? That's the work W that the electrical force do when it moves charges Q across a potential difference V:

W = V\cdot Q.

The power is the rate at which the electrical force do the work:

\displaystyle P = \frac{W}{t} = V \cdot \frac{Q}{t}.

On the other hand, current I is the charge through a cross-section of the circuit in unit time. By the definition of current:

\displaystyle\frac{Q}{t} = I.

\displaystyle P =V \cdot \frac{Q}{t} = V\cdot I.

Consider Ohm's Law:

V = I \cdot R.

Therefore

\displaystyle P = V\cdot I = (I \cdot R) \cdot I = I^{2}\cdot R.

6 0
3 years ago
Read 2 more answers
The radius of a circle is 7m , find its area in terms of π
dangina [55]

Answer:

49π

Step-by-step explanation:

A = π r^{2}

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A = 49π

For the one you put in the comment...

The radius of a circle is 19cm find its area in terms of π

A = π r^{2}

A = π 19^{2}

A = 361π

For the other one you put in the comment

The radius of a circle is 4 cm find its area in terms of π

A = π r^{2}

A = π 4^{2}

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For the other one you put in the comment

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A = π r^{2}

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Hope this helped!

Have a supercalifragilisticexpialidocious day!

8 0
2 years ago
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A(n)_____is a mathematical sentence that compares expressions that are equal
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Answer:

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Step-by-step explanation:

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4 0
2 years ago
Find the greatest common factor!<br> Please help with these 2 questions
Aleksandr-060686 [28]

Hello!

The greatest common factor (GCF) is self explanatory. We find the factors of each number, and find the largest ones that are in common

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33:1,33,3,11,

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Now for the next set.

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3 years ago
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Answer:

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g(x) =  - log₂x + 2

So the inverse for log₂(x) + 2  is - log₂x + 2.

3 0
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