http://i86.photobucket.com/albums/k94/ssneha/area.jpg
Area of an object = length (say a) * breadth (say b)
Therefore, area of a square = a^2 (for a square, length = breadth)
Area of a rectangle = a*b
However, area of a cylinder = 2*Pi*r^2 + Pi*d*h
Since, we're talking about area here, we shouldn't take height into consideration because if we do, then it becomes volume, r8?
agghh....I'm totally confused.....can you plz tell me where I'm goin wrong? What are the main factors you need to consider when finding the area and volume of a figure (square, rectangle, prism...)
Why do we add up the circles when we don't add up the sides in a square or rectangle, though they're equal?
2006-09-30 01:42:33 · 6 answers · asked by carefree 1 in Education & Reference ➔ Homework Help
hi
dear
area of right circular cylinder is 2*Pi*r^2
=Pi*2*r*r
=Pi*d*r because d =2*r
got it???
u need length,breadth....depends on the figure
we ad circles to find its circumference
plz make second part clearer
Any prob mail me at rachit_johncena@yahoo.co.in
2006-09-30 01:54:28 · answer #1 · answered by Rachit Sood 2 · 1⤊ 0⤋
The solution to your delimma is quite simple. A cylinder has three surfaces, two circles (one at each end) - the "2 pi r*2 in your answer - and the wrap around surface.
The wrap around surface has a 'length' of 2 x pi x r and a 'width' of h. 2 x pi x r is the same as pi x d (as 2r = d). The surface area of this "rectangle" is pi x d x h.
The Volume of a cylinder is pi x r*2 X h notice there are no +'s.
2006-09-30 02:08:54 · answer #2 · answered by jemhasb 7 · 1⤊ 0⤋
it rather is straightforward. you're able to do 6 x 2 which potential 6 rows of two cans, 2 x 6 which potential 2 rows of 6 cans, a million x 12 which potential one row of 12 cans, 12 x a million which potential twelve rows of a million can, 4 x 3 which potential 4 rows of three cans and 3 x 4 which potential 3 rows of four cans.
2016-10-15 09:08:40 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Please go back to the basic.
The unit for area in metric system is square meters. That is meter x meter
The unit for volume in metric system is cubic meters. That is meter x meter x meter.
2006-09-30 02:54:16 · answer #4 · answered by The young Merlin 4 · 0⤊ 0⤋
well dont confuse me now too. thats a prettty hard problem. listen to what the first guy said.
2006-09-30 02:00:08 · answer #5 · answered by Anonymous · 0⤊ 2⤋
see units of measurement
length is in centimeter
area is in centimeter*centimeter
volume is in centimeter*centimeter*centimeter
2006-09-30 02:11:57 · answer #6 · answered by deepak57 7 · 0⤊ 0⤋