Level:
Project ID:
1103077101
Source Problem:
Accepted:
1
Clonable:
1
Easy:
1
Derive the formula for calculating the perimeter of an equilateral triangle inscribed in a circle of radius \( r \).
\( 3\sqrt3 r \)
\( \sqrt3 r \)
\( 3 r \)
\( \frac{3\sqrt3 r}2 \)