Answer:
7.85 ft
Step-by-step explanation:
This question is asking you to find the circumference of the circle. To do this the equation is C=
D where C is circumference and D is diameter. So, C= 3.14* 2.5 which equals 7.85 ft.
Hmmm, I'm guessing your asking if that's correct, if so, yes
If you multiply 9 x 3
=27
And multiplying the 10's means that the exponents need to be added
So the answer would be...
27 x 10^8