anonymous
  • anonymous
how do you find the surface area of a cylinder? Ex: r=4 width(across)=21
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
dont you have to do some king of net
anonymous
  • anonymous
*kind
hoblos
  • hoblos
area = 2pi*r^2 + 2pi*r*h

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anonymous
  • anonymous
i kno but
anonymous
  • anonymous
for the rectangle it gives u only one number
anonymous
  • anonymous
wait for the rectangle its pi*r=?*h=hight
anonymous
  • anonymous
whats r? radius?
anonymous
  • anonymous
but i thought for rectangle it was like height times width or the other side
hoblos
  • hoblos
the area of the rectangle here = perimeter of the circle multiplied by the height since the perimeter actually its width
anonymous
  • anonymous
so the area of rectangle is the circumference of circle times the hieght?
hoblos
  • hoblos
yup
anonymous
  • anonymous
in a book it said (pi d ) h
anonymous
  • anonymous
hmm ohmygod ur rite
anonymous
  • anonymous
THANKS YOU SO MOAUCH
hoblos
  • hoblos
yeah you know that 2r=d
anonymous
  • anonymous
ye
hoblos
  • hoblos
my pleasure XD
anonymous
  • anonymous
:)
anonymous
  • anonymous
2(pi)rh+2(pi)r^2 is its surface

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