2 years ago

I need the correct answer please and thank you.

Mathematics

1 answer:

Airida [17]2 years ago

4 0

Answer:

1,156 I think that’s right

Step-by-step explanation:

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How many times does 3 go Into 20

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The arc of the parabola y = x^2 from (3,9) to (4,16) is rotated about the y-axis. Find the area of the resulting surface. Please

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Answer:

156.5

Step-by-step explanation:

Thinking process:

The area can be calculated using the formula:

$S = \int\limits^4_3 {2\pi x\sqrt{1+}(2x)^{2} } \, dx$

We let the substitution take place.

Therefore, we let $u = 1 + 4x^{2}$

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So,

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Thus,

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