5(a + 3b) = 5(9 + 3(2)) = 5(9 + 6) = 5(15) = 75
The volume formula for a cylinder is :
V= (pi)(r^2)(h)
So r= d/2 where d = 16mm so r= 8mm h is given as equaling 5.7mm
Now just plug it into the formula.
V=(pi)(8^2)(5.7) = 364.8 pi mm = 1146.053mm
twelve multiplied by six equals seventy two. Three multiplied by two equals six. Therefore seventy-two plus six equals seventy-eight
I'm pretty sure it's 5. I haven't tried to do volume in a couple years.
