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Strike441 [17]
3 years ago
13

A cube has a area of 81cm squared find its volume​

Mathematics
2 answers:
vladimir1956 [14]3 years ago
4 0

Answer:

Area of one face of a cube = 81 sq cm.

Hence, each side of the cube = 81^0.5 = 9 cm.

So volume of the cube = 9^3 = 729 cm^3

Step-by-step explanation:

Alik [6]3 years ago
4 0

Step-by-step explanation:

Area of face of a cube = 81 cm squared

So area of face = a x a = 81

A^2 = 81

A= 9

So side = 9cm

So volume of a cube = side x side x side = side ^3

= 9x 9 x9 = 729

So Volume = 729 cm^3

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Second binomial formula
(a - b)^2 = a^2 - 2ab + b^2
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=9x^2 + 24x - 16
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A manufacturer introduces a new computer, and the marketing department uses the function s(t)=250/3+4e^-0.54t to
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Step-by-step explanation:

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The instructions for building a kite tell you to begin by cutting a strip of wood to 45 cm in length, but your ruler only measur
nata0808 [166]
I got 17.72 for this one.
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3 years ago
What is the absolute value<br> 3|x+6|-7=20
zzz [600]
<h3>Answer:</h3>

\large\boxed{x=3\,\,\text{or}\,\,x=-15}

<h3>Step-by-step explanation:</h3>

In this question, we're solving the equation with the absolute value.

In this case, we would be solving for x.

The equation we are solving is:

3|x+6|-7=20

Lets solve:

3|x+6|-7=20\\\\\text{First, we add 7 to both sides}\\\\3|x+6|=27\\\\\text{We need to get the absolute value by itself, so}\\\text{we would divide both sides by 3}\\\\|x+6|=9\\\\\text{For absolute value, there could be two possiblities}\\\\x+6=9\,\,\text{or}\,\,x+6=-9\\\\\text{We would solve for both}\\\\x+6=9\\\\\text{Subtract 6 from both sides}\\\\x=3\\\\x+6=-9\\\\\text{Subtract both sides by 6}\\\\x=-15\\\\\boxed{x=3\,\,\text{or}\,\,x=-15}

Your answer would be x = 3 or x = -15

<h3>I hope this helped you out.</h3><h3>Good luck on your academics.</h3><h3>Have a fantastic day!</h3>
7 0
4 years ago
If the length of the minor axis of an ellipse is 6 units and the length of the major axis is 10 units, how far from the center a
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The distance from the center to where the foci are located exists 8 units.

<h3>How to determine the distance from the center?</h3>

The formula associated with the focus of an ellipse exists given as;

c² = a² − b²

Where c exists the distance from the focus to the center.

a exists the distance from the center to a vertex,

the major axis exists 10 units.

b exists the distance from the center to a co-vertex, the minor axis exists 6 units

c² = a² − b²

c² = 10² - 6²

c² = 100 - 36

c² = 64

c = \sqrt{64}

c = 8

Therefore, the distance from the center to where the foci are located exists 8 units.

To learn more about the Pythagorean theorem here:

brainly.com/question/654982

#SPJ4

3 0
1 year ago
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