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4 votes
The dimeter of a circle is 8.2 cm, find its radius​

2 Answers

3 votes

The radius is 4.1.

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In order to find the radius of a circle, apply the formula :


\longrightarrow\quad\sf{r=\cfrac{d}{2}}

where d = diameter

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Our next step is to substitute 8.2 for the diameter of the circle :


\longrightarrow\quad\sf{r=\cfrac{8.2}{2}}


\longrightarrow\quad\sf{r=4.1}

∴ The radius of the circle is 4.1 cm.

User Scrummy
by
8.1k points
6 votes

Answer:

4.1 cm

Explanation:

By definition, a radius is one half of the diameter:

Radius = (1/2)(Diameter)

Radius = (1/2)(8.2 cm)

Radius = 4.1 cm

User Alma Alma
by
7.5k points
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