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3 years ago

The diagram shows a solid which is half of a cone. Calculate the total surface area of the solid.

Mathematics

1 answer:

Vilka [71]3 years ago

5 0

Answer:

<h2>100πcm².</h2><h2>None of the options is correct</h2>

Step-by-step explanation:

Total surface area of a cone $S$ = $\pi r^{2}+\pi rl\\$

Since the diagram is half of a cone, its surface area will be $S = \frac{\pi r^{2} +\pi rl}{2}$

r = radius of the cone

l = slant height

From the diagram diameter of the cone = 16m;

r = 16/2 = 8m

l = 17m

$S = \frac{\pi (8)^{2} +\pi (8)(17)}{2}\\S = \frac{64\pi + 136\pi }{2} \\S = 32\pi + 68\pi \\S = 100\pi cm^{2}$

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3 years ago

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eimsori [14]

Solution :

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$r_{in}$ = 5 L/min

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∴ $r_{net} = r_{in}- r_{out}$

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Therefore,

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C = -230

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mylen [45]

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