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Find the area of a circle with diameter 20 meters.

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$100 \pi \mathrm{m}^{2},314.2 \mathrm{m}^{2}$

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Chapter 9

An Introduction to Geometry

Section 8

Circles

01:38

Find the area of a circle …

01:07

Find the approximate circu…

01:33

00:42

Use 3.14 for $\pi$.App…

00:56

00:35

Find the exact circumferen…

00:54

00:30

Find the indicated measure…

under You're being asked to find the area. Some was start with formula and that I'm going to find my radius and we're being told that the diameter is 20 meters. So I divide that by two. And that tells me my radius is equal to 10 meters. So I'm ready to substitute. So I've got my area is equal to 10 meters squared times pi. So now I can simplify and 10 squared is 100. So that gives me 100 hi meters squared. You're my exact answer, not a plug this into my calculator. Yeah, and if you're using it, calculated a house pie. I highly recommend you do that. So I get approximately. My area is equal to 314.159 surrounding to the nearest 10th. That gives me 314.2 meters squared

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