Please help!!!!!!!!!!!!

Answer:
a) 5 cm b) 12in c) 7yd
I think it's so simple. Anyways
This is your answer. If I'm right so,
Please mark me as brainliest. thanks!!!
Answer:
5 cm, 12in, 3.5 yrds
Step-by-step explanation:
to find the radius you divide the diamenter by 2.