Answer:
use a ruler to answer the question
Can u take its pictures and post it bcuz it might be easer to answer
The answer would be 14 cm.
The formula to find diameter is d=2r
D= diameter
R= radius
The 2 is there because you have half of the diameter so just times by 2 to get the diameter.
4a + 3b - a - 5b
First, gather the like terms.
Second, subtract 4a - a to get 3a.
Third, subtract 3b - 5b to get 2b.

Answer:
3a - 2b
I=prt.....
i=5000*10*0.03=1500
5000+1500=6500