Answer:
Option A. is the right choice.
Step-by-step explanation:

Best Regards!
Answer:
y = 100°
Step-by-step explanation:
x = 40° (vertical angles are congruent)
y is an exterior angel of a triangle that has two opposite internal angles, x (40°) and 60°.
According to the exterior angle of a triangle, thus:
y = 40 + 60
y = 100°
Answer:
Well, with the info I have been given I would say; The L.A of a cylinder is SA+=2(pi)(r)(h).
Step-by-step explanation:
SA=Surface Area
LA=Lateral Area
Pi=3.14
R=Radius
H=Height
V=Volume
LA=2*pi*r*h <-- finds the Lateral Area of a cylinder
SA=LA+2*base or SA=2*pi*r*h+2*pi*r^2<-- finds the Surface Area of a cylinder
V=pi*r^2*h<---- Finds volume of the cylinder