Mathematics: 1. The distance across a circle through its center 2.The distance from the center to any point on the circle

1. The distance across a circle through its center

Ответ:

staffordkimberly

23.01.2022

Mathematics

The distance through the whole circle is diameter and the distance from the middle is the radius

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Ответ:

natajaeecarr

15.05.2022

Mathematics

If the diameter of the sphere is 15, then its radius is half that, or 7.5,

$\bf \textit{surface area of a sphere}\\\\
SA=4\pi r^2~~
\begin{cases}
r=radius\\
-----\\
r=7.5
\end{cases}\implies SA=4\pi (7.5)^2\implies SA=225\pi$

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1. The distance across a circle through its center

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