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timama [110]
2 years ago
9

5. A solid has a circle of radius r as its base. All sections of the solid perpendicular to the diameter along the x-axis are is

osceles right angled triangles. Find the volume of the solid.(Hint: you have to distinguish two cases). 2
Mathematics
1 answer:
AleksandrR [38]2 years ago
4 0

Answer:

 \frac{16r^3}{3}

Step-by-step explanation:

In this cross sections problem, we can integrate from -r to +r (so that the integral covers the entire base of the solid).

\int\limits^r_a {2(x^2+r^2 )} \, dx

The formatting for the integral did not let me put -r on the lower bound, so i replaced it with a, just know that a represents -r here.

Evaluating the integral gives use that it is equal to;

\frac{16r^3}{3}

Caution: this answer may not meet your needs, but this is the answer I have come up with with the given information.

If you found this answer helpful please consider leaving 5 stars, giving it a like, or if you asked this question, mark this answer as Brainliest. Thanks!

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UkoKoshka [18]

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2 years ago
A washer and a dryer cost $664 combined. The washer costs $86 less than the dryer. What is the cost of the dryer?
andreyandreev [35.5K]

Answer:

The dryer is 375 dollars

Step-by-step explanation:

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2 years ago
Can anyone answer this
erik [133]

Answer:

Step-by-step explanation:

1. 10² + 7² = x²

 149 = x²

 x = √149

2. x² + 19² = 21²

 x² = 21² -  19² = 80

 x = √80 = 4√5

3. x² + 16² = 27²

 x² = 27² - 16² = 473

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5 0
3 years ago
2.8 ÷ -0.004. Please show work.
Alexeev081 [22]

Answer:

<h3>-700</h3>

Step-by-step explanation:

\frac{2.8}{-0.004}\\\\\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{a}{-b}=-\frac{a}{b}\\\\=-\frac{2.8}{0.004}\\\\\mathrm{Divide\:the\:numbers:}\:\frac{2.8}{0.004}=700\\\\=-700

5 0
3 years ago
Read 2 more answers
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kakasveta [241]
Litersx1000=mls
20x1000=20000mls
5 0
3 years ago
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