Answer:
7
Step-by-step explanation:
i did it nad its right
Answer:7
It is right because I just did it.
14 divided by 2(the number of sides) is 7.
bbtwiaoKjksetkmdww6inds
plug in what you know.12² + b² = 30²
144 + b² = 900
subtract 144 from 900. You should get 756
√b² = √756
b = 27.5