Please provide a larger picture
Answer is 7
You have to do
54 - 12= 42
Then divide 42 by 6 which equals 7
The answer is 40 because you have a ratio of 4:1 (16:4). If you multiply by ten, it becomes 40:10.
To find the exact volume of a cylinder, you must remember the rule - π r2 h
If 6 inches was the base (radius from the center of the cylinder to the edge) and 9 inches was the height, the equation would look like this -
π (6 squared in) (9 in)
Remember that the radius is squared so the equation would then look like
π (36 in) (9in)
Now you multiply 36 and 9 which would give you 324, then your equation would look like this
324 π
The final step is to multiply 324 by π which would be the volume of a cylinder.
7) - 1
tan <BAD = BD / AD
BC = √(64 + 36)
BC = √100
BC = 10
now you can solve BD
BD/6 = 6/10
BD = 6*6 / 10
BD = 36/10
BD = 3.6
AD = √36 - 12.96
AD = √23.04
AD = 4.8
tan <BAD = BD / AD
tan <BAD = 3.6 / 4.8
tan <BAD = 0.75
7) - 2
cos <DAC + cos <DAB
as you know cos = Adj / Hypo
cos <DAC = AD/AC
cos <DAC = 4.8 / 8
cos <DAC = 0.6
cos <DAB = AD / AB
cos <DAB = 4.8/6
cos <DAB = 0.8
so
cos <DAC + cos <DAB = 0.6 + 0.8
cos <DAC + cos <DAB = 1.4
hope it helps
