braddypeter61
17.02.2020 •
Mathematics
The radius of a circle is 7 centimeters
What is the circumference of the circle?
What is the area of the circle?
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Ответ:
a) So we know the formula of finding the circumference: 2*pi*R.
Assuming we make pi = 3.14: 2 * 3.14 * 7 = 43.96.
b) We also know the formula of finding the area: pi * r^2.
3.14 * 7^2. Using PEMDAS:
3.14 * 49 = 153.86
Ответ: