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ohaa [14]
3 years ago
15

Find the volume of a cylinder whose base is an ellipse with axes of 12 inches and 7 inches. The altitude of the cylinder is 21 i

nches. Round to the nearest tenth of a cubic inch. A. 1,522.41 in3 B. 1,866.45 in3 C. 1,385.45 in3 D. 1,213.12 in3
Mathematics
1 answer:
Tpy6a [65]3 years ago
3 0

if the ellipse has a major axis of 12 inches, that means its major radius is half that, or 6, and if its minor axis is 7, then its minor radius is half that, 3.5.


\bf \textit{volume of an elliptical cylinder}\\\\
V=\pi ab h~~
\begin{cases}
a=\textit{major axis radius}\\
b=\textit{minor axis radius}\\
h=height\\[-0.5em]
\hrulefill\\
a=6\\
b=3.5\\
h=21
\end{cases}
\\\\\\
V=\pi (6)(3.5)(21)\implies V\approx 1385.44236023309881816203

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3 years ago
What’s 4,860 divided by 10 to the 2nd power?
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✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

                  Hello!

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

❖ 4,860 ÷ 10² = 48.6

Convert 10² into a whole number:

10 × 10 = 100

Divide:

4,860 ÷ 10 = 48.6

~ ʜᴏᴘᴇ ᴛʜɪꜱ ʜᴇʟᴘꜱ! :) ♡

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\dfrac{3x}{x+1}\cdot\dfrac{x}{x-7}=\dfrac{(3x)(x)}{(x+1)(x-7)}=\dfrac{3x^2}{x^2-6x-7}

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3 years ago
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