2006-06-28 02:39:29 · 4 answers · asked by ♥ P r I n C e s S ♥ 1 in Science & Mathematics ➔ Mathematics
Well, the circumscribed cylinder will have a radius equal to that of the sphere, and a height equal to the sphere's diameter (which is twice its radius).
S.A. of a sphere = 4*pi*r^2
S.A. of the lateral part of a cylinder = (perimeter of endcap)*(height of cyl.)
= (2*pi*r)*(diam. of sphere)
= (2*pi*r)*(2*r)
= 4*pi*r^2
Q.E.D. :)
Hope that helps.
2006-06-28 02:46:31 · answer #1 · answered by Jay H 5 · 2⤊ 0⤋
Jay took my answer. Man I hate that.
b
2006-06-28 12:22:27 · answer #2 · answered by Bacchus 5 · 0⤊ 0⤋
i prove to you!
2006-06-28 09:43:11 · answer #3 · answered by LaLa The Mathematician 1 · 0⤊ 0⤋
no thanks ... my brain is not ready for that just yet
2006-06-28 09:42:28 · answer #4 · answered by Anonymous · 0⤊ 0⤋