How to change the area of a circle if the radius is increased by 3 times?
| September 9, 2021 | education
1. A circle is a part of a plane, bounded by a circle.
2. The area of the circle is Pi times the radius squared.
3.S = Pi * R ^ 2. The radius has been increased 3 times, which means
S = Pi * (3R) ^ 2;
S = 9 * Pi * R ^ 2.
This means that the area of the circle will increase 9 times.
Answer: it will increase by 9 times.
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