The circle has a radius of [[$ 10 $]] cm. Calculate the following features of a sector with a central angle of [[$ 39 ° $]].

Take a picture of your solutions and return it to the submission folder .

a) The length of the sector's arc.

Answer: The length of the arc is cm.

b) The sector's area.

Answer: The sector's area is cm[[$ ^2 $]].