Find the surface area of the space figure.

Question

anonymous · Answer

attachment

amistre64 · Answer

how doe we find the area of a circle?

amistre64 · Answer

that e felt lonely so i had to use it :)

anonymous · Answer

please help me this math question is due 2 weeks ago so...

amistre64 · Answer

define what you mean by "help"

amistre64 · Answer

your figure is has a surface comprised of a circle for the top

another circle for the bottom

and in essense, a rectangle for the sides

amistre64 · Answer

the width of the rectangle is the same as the distance around the circles; soo

area of circle + area of sircle + cirumference of circle times height

anonymous · Answer

it was cylinder!!!

amistre64 · Answer

right, a circle up top; a circle on the bottom; and the rectangle that wraps around the middle ... creates a cylindar

amistre64 · Answer

good luck then ....

anonymous · Answer

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try this... this is called a net of the cylinder...  do you see the rectangle now?

anonymous · Answer

no i just need like 2*3.14*?*?

anonymous · Answer

yes, that's what he was trying to explain to you.  this whole thing is a process of getting the answer...  you'll have to know what tools (formulas) to use to solve this problem.

anonymous · Answer

but rectangle doesn't have number of width or hieght

anonymous · Answer

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have you ever opened up a soup can before?  when you take the lid off, that lid is a circle.  if you take the bottom off that too is a circle.  

now if we take the rest of the can and cut it along the dotted line as shown and opened it up and laid it flat, the shape would be a rectangle...

so to find the surface area of the cylinder, you'll need the area of the two circles and add to the area of the rectangle.