What is the formula to find the surface area of a right circular cylinder?
2006-10-22 04:00:19 · 5 answers · asked by Jasmyne F 1 in Education & Reference ➔ Homework Help
2pi r(h + r),r and h are the radius and height, respectively.
2006-10-22 04:03:04 · answer #1 · answered by Anonymous · 3⤊ 0⤋
Not sure what you call a right circular cylinder
say its a can with top and bottom removed
The surface area would be the area covered by the can if it was laid out flat
so the circumference = pi x diameter
and surface area = circumference x length of can
2006-10-22 06:30:35 · answer #2 · answered by Daddybear 7 · 0⤊ 0⤋
Basically you have two circles (the bases) and a rectangle (the middle, like the label on a soup can). Each circle has an area of pi*radius^2. The length of the rectangle is the circumference of the circles (2*pi*radius), and the width is the height of the cylinder, so the area of the rectangle would be 2*pi*radius*height. That's why the overall area formula is:
A = 2*pi*r^2 + 2*pi*r*h .
2006-10-22 05:45:02 · answer #3 · answered by dmb 5 · 0⤊ 0⤋
In plain and simple terms [without the expertise of mathemtical language which I don't understand!] The surface area is as it says the area of a surface and is usually described in terms of square inches or centimetres etc etc.
If a swimming pool is full of water and the length is 10ft and the width is 10ft then the area is 10ft x 10ft = 100ft - so that's the surface area of the water!
I do hope that's right!!!!! No it isn't!
So I got that wrong then!!!
2006-10-22 04:07:20 · answer #4 · answered by Anonymous · 0⤊ 0⤋
pi can be written as Ï
2006-10-22 04:10:01 · answer #5 · answered by Anonymous · 0⤊ 0⤋