@apologiabiology

2 answers:

8 0

Hi There!

What is the approximate volume of the cone? Use 3.14 for π.

A.
2120 cm3

B.
4239 cm3

C.
6359 cm3

D.
<span>1272 cm3
</span>
I just helped someone yesterday on this problem but, Answer is <span>2120 cm3</span>

Romashka-Z-Leto [24]3 years ago

5 0

V=(1/3)hpir^2
h=9
r=15
V=(1/3)9pi15^2
V=3pi225
V=675pi
aprox pi=3.14
V=2119.5 cm^3
A is answer

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<h2>QUESTION</h2>

What is 33% of 400?

<h2>ANSWER AND EXPLANATION</h2>

To find the percent of a number, you have to change the percent into a decimal or a fraction and multiply by the number.

<h3>DECIMAL</h3>

To change a percent into a decimal, remove the percent sign and move the decimal point 2 places to the left.

$33 \% \rightarrow 0.33$

Now that you have your decimal, multiply by 400:

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ANSWER = 132

<h3>FRACTION</h3>

To change a percent into a fraction, make the percent number as the numerator(top number) and 100 as the denominator(bottom number) since fractions are out of 100.

$33 \% \rightarrow \frac{33}{100}$