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disa [49]
3 years ago
7

What is the radius of a sphere if its surface area is 2,122.64 square inches? (Use 3.14 for .)

Mathematics
2 answers:
Lady_Fox [76]3 years ago
8 0
\bf \textit{surface area of a sphere}\\\\
SA=4\pi r^2~~
\begin{cases}
r=radius\\
------\\
SA=2122.64
\end{cases}\implies 2122.64=4\pi r^2
\\\\\\
\cfrac{2122.64}{4\pi }=r^2\implies \cfrac{530.66}{\pi }=r^2\implies \sqrt{\cfrac{530.66}{\pi }}=r
Svetach [21]3 years ago
7 0

Answer:

13

Step-by-step explanation:

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