Lesson 1 - Scottsbluff Public Schools

Radius; diameter: 120 mm, circumference: about 380 mm. Problem 3. A half circle is joined to an equilateral triangle with side lengths of 12 units. What is the perimeter of the resulting shape? Solution. about 42.84 units. The two sides of the triangle each contribute 12 units and the semi-circle has a perimeter of 6⋅π or about 18.84 units ... ................
................