The 3 times circle rule is a rule for finding the circumfrence of a circle. Basiclly, you multiply the diameter by 3.
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If you measure the middle of the circle and then times it by 3
Radius is 3 times as large so area is 3*3 = 9 times as large.
Approximately yes. Circumference is equal to pi times the diameter of the circle, which is 3.14159 times the diameter.
the answer is 21. the circomference is 3 times the diameter. so 7 times 3 = 21
The circumference of a circle is pi times the diameter. If you want a third of that, divide by 3. (Pi is approximately 3.14) Then to get the perimeter add the diameter to the circumference of the 1/3 of the circle.