A triangle is placed in a semicircle with a radius of 4 mm, as shown below. Find the area of the shaded region. Use the value 3.14 for pie and do not round your answer. Be sure to include the correct unit in your answer.

A triangle is placed in a semicircle with a radius of 4 mm as shown below Find the area of the shaded region Use the value 314 for pie and do not round your ans class=