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3 years ago

What's the circumference of a circle with a radius of 7 in? Round your answer to the nearest inch. A. 41 in. B. 44 in. C. 21 in.

D. 14 in.

Mathematics

1 answer:

Simora [160]3 years ago

4 0

$\bf \textit{circumference of a circle}\\\\ C=2\pi r~~ \begin{cases} r=radius\\ \cline{1-1} r= 7 \end{cases}\implies C=2\pi (7)\implies C=14\pi \implies \stackrel{\textit{rounded up}}{C=44}$

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jeka94

Answer:

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Step-by-step explanation:

Given:

Selling price of bicycle $=\$65$ .

The friend gave $x$ five dollar bills and $y$ ten dollar bills.

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Solution:

The friend gave $x$ five dollar bills and $y$ ten dollar bills and the friend gave $9$ bills in all.

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Putting the value of $x$ from equation $(i)$ in equation $(ii)$ .

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