MATH101 Lecture Notes - Straight Edge
Document Summary
The circumference of a semicircle is the total distance around the curved edge of a half-circle. It can be calculated by adding the length of the straight edge (diameter) to half of the curved edge (half of the circle"s circumference). The formula for the circumference of a full circle is c = 2 r, where c is the circumference, and r is the radius of the circle. Since a semicircle is half of a circle, its circumference will be half the circumference of the full circle. Therefore, the formula for the circumference of a semicircle is: C = r + 2r where c is the circumference of the semicircle, and r is the radius of the semicircle. For example, let"s say we have a semicircle with a radius of 6 cm. We can use the formula above to nd the circumference of the semicircle: Therefore, the circumference of the semicircle with a radius of 6 cm is approximately.
