455, because if you do 5/12=0.416666..., and then you multiply that to 780 you would get 325, and then you do 780-325 to equal 455.
Answer:
71
Step-by-step explanation:
3 . 2^2+5+2. 3^3
3 . 4 + 5 + 2 . 27
12 + 5 + 54 = 71
Circumference =

r = radius
diameter of a circle = 2r
Do you need the total or just interest?
Knowing the GCF and LCM helps me when me add and subtract and multiply fractions by breaking the numbers in to 2 different sections and looking at my table of contents