Find the lateral area, total area, and volume for the cylinder with the given measurement.

r = 2, h = 4 i need the answers in pi

Question

Find the lateral area, total area, and volume for the cylinder with the given measurement.

r = 2, h = 4 i need the answers in pi

anonymous · Answer

what are the formulas for the three items you asked for above, based on the information we have worked on?

anonymous · Answer

Meaning can you tell me the equation for lateral area, total area and volume?

anonymous · Answer

Lateral Area:

L.A. = ph

Since finding the perimeter of the base involves the circumference of a circle, the lateral area formula can be written as:

L.A. = 2rh (since the circumference of a circle is 2r)

Total Area:

T.A. = ph + 2B

Again, since the base is a circle the perimeter is actually the circumference of the circle. The formula for total area can be written as:

T.A. = 2rh + 2r2

Volume:r2h

Notice that the volume of a cylinder is simply the area of the base (a circle represented in the formula by r2) multiplied by the height of the cylinder (h).

anonymous · Answer

Good, so the Lateral area = 2 pi (2) (4)
Area = 2 pi (2sqd) + 2 pi (2) (4)
vol = pi (2sqd) (4)

what are your answers?

anonymous · Answer

i dont rlly understand the way they wrote it only u quys lol thats the problem

anonymous · Answer

Ok, so the lateral area = 2 pi x 2 x 4 = how many pi

anonymous · Answer

what is 2 times 2 times 4 = to?

anonymous · Answer

16

anonymous · Answer

correct, so your lateral area = 16pi

anonymous · Answer

ok

anonymous · Answer

what about the others

anonymous · Answer

so apply the same thing to the area.  2 pi timee (2 x2) + 2pi times (2 x 4)

anonymous · Answer

and the volume = pi (2x2) times 4

anonymous · Answer

so my volume is 16 also

anonymous · Answer

yes, the vol = 16 pi cubed

anonymous · Answer

what about the surface area what number did you get?

anonymous · Answer

idk about the total area

anonymous · Answer

2 pi times (2 x2) + 2pi times (2 x 4)  solve this equation

anonymous · Answer

i qot 6

anonymous · Answer

lol

anonymous · Answer

ok 
2 x 2 x 2 = 8  
2 x 2 x 4 = 16 
 8 + 16 = what?

anonymous · Answer

24

anonymous · Answer

do you see how i got this?

yes!!!!

anonymous · Answer

lol yes thank you

anonymous · Answer

Just remember when you are working with area it is squared and when you are working with Volume it is cubed

anonymous · Answer

ok