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Answer:
Area: 10.7521 cm
Circumference: 11.62389 cm
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<h3>Solve: Area</h3>Area, <em>A,</em> will equal the formula of , so we must find the value and split that up. Diameter, <em>d</em> is equal to 2<em>r</em>. Let's solve.
Now, make an equation combining like terms.
This equation means to multiply those terms together. Since the diameter is 3.7, <em>d</em> is 3.7
<em>Let's move on to circumference. On we go!</em>
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<h3>Solve: Circumference</h3>With circumference, it is very similar to what you just did to find area(<em>A</em>). You must again, set up these terms and make an equation out of them. C(circumference) is going to be equal to , notice how it does not say <em>squared</em>(
) at the end now.
And diameter, you guessed it, will be 2r.
Now, combine the like terms into an equation.
<em>pi times diameter</em>(3.7)
Now that the problem is done, we move on to review.
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<h3>What have we learned?</h3>We learned how to solve for circumference and area using diameter.
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<h3>Questions?</h3>Feel free to ask in the comments.