An apple pie is 19 centimeters across from one end to the other passing through
the middle. What is the area both in terms of pi and as an estimated answer?



Answer :

A circle's area is equal to pi times the radius squared (A = r2). 78.5 is our Area.

What is the area both as an approximated answer and in terms of pi?

The circumference is "2r", or "2 * 3.14 * r".

The area is "r^2", or "3.14 * r * r".

Let's establish what the radius is, as  is equivalent to 3.14.

The radius is half of the diameter, and our diameter is 10.

Divide 10 by 2 to find our radius.

10 / 2 = 5

The radius is 5.

Now, let's plug in 5 for the radius for both formulas.

C = 2 * 3.14 * 5

10 * 3.14

31.4 is our Circumference.

Now, onto the area.

A = r * r * 3.14

5 * 5 * 3.14

25 * 3.14

78.5 is our Area.

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