SOS PLEASE SEND HELP I AM DOING A THIS AND I DON'T UNDERSTAND IT!!

Answer:
B) circumference = 15.7 inches
Step-by-step explanation:
5.0 inches is the diameter
Pi = 3.14 (this is a standard unit for solving circles)
the formula for circumference is:
circumference = diameter x Pi
circumference = 5 x 3.14 = 15.7 inches