if radius is 45
V≈1.78×10^5
if radius is 28
V≈1.11×10^5
volume = pi times radius squared times height
if radius is 45
volume = pi times 45 squared times 28
You can solve the by dividing the change in y by the change in x. the answer should be D
In triangle b. we know that tan(x) = Opposite side to x angle / Adjacent side to angle x.
By substituting in above formula,
tan(x) = 12/5 = 2.4
x = tan^-1(2.4) = 68 degrees.
And in triangle a. i am not clear with the angle. Is it 51 or any other?