3 years ago

Find the total surface area of the cone in the figure. ( use rr=3.14.)

Mathematics

1 answer:

nikitadnepr [17]3 years ago

4 0

Answer:

Answer D

Step-by-step explanation:

The formula is $A = pi r(r+\sqrt{h^2+r^2})$ . We have our r (radius) and h (height), so plugging it all in would give us A = (3.14)(5 + sqrt(12^2)+(5^2). After computing this, you would get answer D, 282.6.

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3 years ago

Solve and show how you did: -2x + (12 - 9) = 2 + 9 + 2x

Norma-Jean [14]

Remove parentheses
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Add 2x to both sides
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Subtract 11 from both sides
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