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Dmitry [639]
3 years ago
14

Note: picture not drawn to scale

Mathematics
1 answer:
Fantom [35]3 years ago
6 0

Answer: C. 314 cm2

Step-by-step explanation:

The equation for the area of a circle is: pi * radius squared. First, 10 squared is 100. 100 times 3.14 is 314.

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Step-by-step explanation:

7 0
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Find the interval(s) of upward concavity on this accumulation function.
maxonik [38]

\displaystylef(x)=\int_{0}^{x^2}\sec^2(\sqrt{x})dx \\=\int_{0}^{\sqrt{x^2}}\sec^2(u)\cdot2udu \\=2\int_{0}^{\sqrt{x^2}}\sec^2(u)du \\=2\Big[u\tan(u)-\int\tan(u)du\Big]_{0}^{\sqrt{x^2}} \\=2\Big[u\tan(u)+\ln\Big(\mathrm{abs}(\cos(u))\Big)\Big]_0^x \\=2\Big(x\tan(x)+\dfrac{1}{2}\ln\Big(\cos^2(x)\Big)\Big) \\=2x\tan(x)+\ln(\cos^2(x))

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6 0
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Thepotemich [5.8K]

Answer:

<u>The</u><u> </u><u>solution</u><u> </u><u>is</u><u> </u><u>B</u>

Step-by-step explanation:

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