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okay, that image was not that helpful. What are the special properties on a 45-45-90 triangle?
i dont get what you asking
What is special about having a triangle ABC that is a 45 degree-45 degree-90 degree?
It's a special triangle, correct? http://www.regentsprep.org/Regents/math/algtrig/ATT2/Ltri45.htm
so we know the hypotenuse. Therefore we can figure out the radius (as it's the legs of the triangle). Then from the radius we know the sphere's surface area equation. Get it?
okay so i got D is that correct?
erm... I got something else.
what did you get... I am confused lol
Okay. You have the hypotenuse is 8Sqrt so the leg is simply 8. Then we use the equation for surface area of a sphere (or derivative of the volume equation)
then we get 256pi or C
can you explain that?
\[Surface Area= 4\pi r^2\] So we plug in r=8; 4*8^2= 4*64=256 We ignored the pi initially since we realized that the pi was already built into the answers. Then we get 256pi or answer C
ohhh thanks so much :)