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Lemur [1.5K]
3 years ago
9

Find the volume of the cone. Leave your answers in therms of pi.

Mathematics
1 answer:
Irina18 [472]3 years ago
5 0
The formula for the volume of a cone is V=PI x r^3 x h/3

The radius is given as 3 and height is 7.

V = PI x 3^2 x 7/3

V = PI x 9 x 2.333

V = PI x 21

V = 21PI cm^3

The answer is C.
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What is the simple interest for a principal of $650 invested at a rate of 9% for 5 years?
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Work Shown:

P = 650 is the the principal.

r = 0.09 is the interest rate in decimal form.

t = 5 is the number of years.

i = P*r*t

i = 650*0.09*5

i = 292.50 is the simple interest.

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3 years ago
A number has the digits 2, 5, and 4 to the nearest 100, the number rounds to 200 what is the number
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Step-by-step explanation:

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Radium-226 is a metal with a half-life of 1600 years. If you start with 1 kilogram of radium-226, how much will remain after 20,
erica [24]
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6 0
4 years ago
If P = 2l + 2w, the formula to find w is .<br> If P is 30 units and l is 10 units, w is units.
Helen [10]

Answer:

<u>If P is 30 units and l is 10 units, w is 5 units</u>

Step-by-step explanation:

1. Let's check the information given to resolve the question:

P = 2l + 2w

If P is 30 units and l is 10 units, w is units

2. Replacing with the values:

P = 2l + 2w

30 = 2 (10) + 2w

30 = 20 + 2w

-2w = 20 -30 (Subtracting 2w and - 30 to both sides)

-2w = - 10

2w = 10 (Multiplying by - 1 at both sides)

<u>w = 5 (Dividing by 2 at both sides)</u>

<u>If P is 30 units and l is 10 units, w is 5 units</u>

<u>Note: Same answer than question 13938258</u>

4 0
4 years ago
PLEASE HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!
Serggg [28]
The answer would be 53. This can be found by add 127 twice (xy and uz) and subtracting it from 360. This would give you 106 and you would divide it by 2 for the 2 angles left and get the answer.
7 0
3 years ago
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