00:01
All right, so to find the lateral area of the cylinder, that would be the circumference times the height because we're, it's like the label of the gan.
00:13
So the lateral area of the size would be the circumference 2 pi r times the height.
00:20
But we need to do a little work to find the radius here, which is part of the diameter, which we can use the pythagorean theorem to complete.
00:28
We've got, i'll call it d for diameter.
00:32
D squared plus 8 squared would equal the radius, not the radius, the hypotenuse of this right triangle, 10 squared.
00:40
So we've got d squared plus 64 equals 100, and d squared would then equal 36.
00:47
So the diameter is the square root of 36 or 6.
00:58
If the diameter is 6, that means the radius is 3...