Answer:
266.9
Step-by-step explanation:
In order to find the circumference of a circle, you have to multiply the diameter by pi.
Circumference= 85 × 3.14
When multiplied this will get you 266.9
12
if R = 9
9-8=1
9 + 3 = 12
12*1=12
let's firstly, convert the mixed fractions to improper, and then do equation.
Answer:b-(1/4)b+15