What line? did you mean to add a picture?
Pulling out a black pen first will grant you a 40% chance of that occurring, then when you put it back the probability of you pulling out a red pen would be 50% so in decimal form these two values would be .40 and .50 multiply these two together you should get .20 or a 20% chance. Also a written fraction would be 1/5, all of which are valid answers.
Answer: 14.99
Step-by-step explanation:C=2πr
d=2r
Solving ford
d=C
π=47.1
π≈14.9924
Parallelogram square rectangle
