Determine the area of a circle that has a radius of 8 cm. If necessary round answers to nearest tenth.

Question

anonymous · Answer

Hey! So, yeah, there's this really cool fact about circles that lets you find the area just by knowing the radius! All you have to do is
$$\Large \pi*r^2$$

da_scienceman · Answer

tbrroks pls substitute as Smoothmath said

anonymous · Answer

Here's a quick example. If I have this circle:
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I notice that the radius is 2, so to find the area, all I have to do is:
$$\Large \pi*(2)^2 = \pi*4 = 4\pi \approx 12.566$$

anonymous · Answer

thanks for given me a simplified example it helps alot for my other questions .

anonymous · Answer

but if it say round to nearest tenth would i make it 12.57 ?

anonymous · Answer

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