Volume of cylinder is 5390 cm and radius of its base is 7 cm.Find the height of cylinder

Mathematics

1 answer:

slamgirl [31]2 years ago

7 0

Answer:

35.01 cm or 35cm

Step-by-step explanation:

$\frac{volume}{\pi r^{2} } =height$

$\frac{5390}{\pi 7^{2} }$ =35.01cm

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Suppose a and b are both non zero real numbers. Find real numbers c and d such that 1/a+ib= c+id

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Explanation

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Step 1

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$\begin{gathered} \frac{1}{a+bi}\cdot\frac{a-bi}{a+bi}=\frac{a-bi}{(a+bi)(a-bi)}=\frac{a-bi}{a^2-(bi)^2} \\ \frac{1}{a+bi}\cdot\frac{a-bi}{a+bi}=\frac{a-bi}{(a+bi)(a-bi)}=\frac{a-bi}{a^2-(-b^2)}=\frac{a-bi}{a^2+b^2} \end{gathered}$

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I hope this helsp you

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Applying properties to write equivalent expressions for 2x+5y+5(2x+5y)

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Solving expression $2x+5y+5(2x+5y)$ we get $12x+30y$