Answer:
45 m
Step-by-step explanation: 15 x 3 = 45
2.5
Step-by-step explanation:
True
Just a guess
Answer: 31.4
C=2πr
2(3.14)(5)
2(15.7)
31.4
Yes. When solving a problem like this, multiply the base numbers normally, and add the exponents together.
If you need more help, comment below and I'd be happy to assist.