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Iteru [2.4K]
2 years ago
15

How does the volume of a cone change if its radius and height are both tripled

Mathematics
1 answer:
Evgesh-ka [11]2 years ago
6 0
The volume formula could be re-written to help understand this, as V = π*3r^2*3h. If you solve for this, you can conclude that the volume would be multiplied by 27.
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it is an irrational number

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bezimeni [28]

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V = π × r² × h

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-2 1/2 - (-1 3/4) ? ​
Olin [163]

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- 3/4

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8 0
2 years ago
Find the area of the triangle<br> 1. C=110 degrees, a=6, b=10<br> 2. B=130 degrees, a=92, c=30
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1.\ \ \ |\angle \ ACB|=110^0\\\\.\ \ \ \ \ a=|BC|=6\ [u]\ \ \ and\ \ \ b=|AC|=10\ [u]\\\\Area= \frac{1}{2} \cdot |AC|\cdot |BC|\cdot sin(|\angle \ ACB|)\\\\Area= \frac{1}{2} \cdot 6\cdot 10\cdot sin110^0=30\cdot sin (180^0-70^0)=\\\\.\ \ \ \ \ \ =30\cdot sin70^0\approx30\cdot 0.9397=28.191\ [u^2]\\\\

2.\ \ \ |\angle \ ABC|=130^0\\\\.\ \ \ \ \ a=|BC|=92\ [u]\ \ \ and\ \ \ c=|AB|=30\ [u]\\\\Area= \frac{1}{2} \cdot |AB|\cdot |BC|\cdot sin(|\angle \ ABC|)\\\\Area= \frac{1}{2} \cdot 30\cdot 92\cdot sin130^0=1380\cdot sin (180^0-50^0)=\\\\.\ \ \ \ \ \ =1380\cdot sin50^0\approx1380\cdot 0.7660=1057.08\ [u^2]\\\\
5 0
3 years ago
stan needs 90 points to get a passing grade in class. He already has6 points. If each book report is worth 7 points, what is the
yulyashka [42]

Answer:

12

Step-by-step explanation:

6 + 7n = 90

n = number of book reports

6 + 7n = 90

7n = 84

n = 12

12 book reports

3 0
3 years ago
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