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2 years ago

Please help..

Mathematics

1 answer:

dexar [7]2 years ago

8 0

9514 1404 393

Answer:

(d) 2/3(11)

Step-by-step explanation:

The height of the cylinder is h=2r, so the volume of the cylinder in terms of radius is ...

V = πr^2·h = πr^2·(2r) = 2πr^3

The volume of the sphere is given by the formula ...

V = (4/3)πr^3

So, the ratio of the sphere volume to the cylinder volume is ...

sphere volume / cylinder volume = ((4/3)πr^3)/(2πr^3) = (4/3)/2 = 2/3

That is, the sphere volume is ...

sphere volume = (2/3) × (cylinder volume)

V = (2/3)(11)

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prohojiy [21]

Answer:

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Step-by-step explanation:

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$\begin{gathered} \quad{\longrightarrow{\sf{{(a)}^{2} + {(b)}^{2} = {(c)}^{2}}}} \\ \\ \quad{\longrightarrow{\sf{{(20)}^{2} + {(21)}^{2} = {(c)}^{2}}}} \\ \\ \quad{\longrightarrow{\sf{(20 \times 20) + (21 \times 21) = {(c)}^{2}}}} \\ \\ \quad{\longrightarrow{\sf{(400) + (441) = {(c)}^{2}}}} \\ \\ \quad{\longrightarrow{\sf{400 + 441 = {(c)}^{2}}}} \\ \\ \quad{\longrightarrow{\sf{841= {(c)}^{2}}}} \\ \\ \quad{\longrightarrow{\sf{c = \sqrt{841}}}} \\ \\ \quad{\longrightarrow{\sf{\underline{\underline{\purple{c = 29 \: km}}}}}}\end{gathered}$

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Answer:

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Step-by-step explanation:

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