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Scilla [17]
3 years ago
10

Work out the total surface area of this hemisphere which has a radius of 8cm.

Mathematics
1 answer:
Masja [62]3 years ago
4 0

\bf \textit{surface area of a sphere}\\\\ SA=4\pi r^2~~ \begin{cases} r=radius\\ \cline{1-1} r=8 \end{cases}\implies SA=4\pi (8)^2\implies SA=256\pi \\\\\\ \stackrel{\textit{half of that for a \underline{hemi}sphere}}{\cfrac{256\pi }{2}\implies 128\pi \implies }\stackrel{\textit{rounded up}}{402.1}

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Answer:

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Step-by-step explanation:

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3 years ago
How would I solve y=5x-2 & -14x+y=16 in a substitution equation
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You would substitute the given value of “y” into the equation of -14x+y=16
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Then you would solve for “x”
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You would then substitute the value of “x” into the equation to solve for “y”
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Which would then give you a value for “y”
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3 years ago
Which of the following is a step in simplifying the expression x multiplied by y to the power of 3 over x to the power of negati
Sveta_85 [38]

Answer:

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Step-by-step explanation:

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2 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
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