00:01
Alright, so this one, one and two.
00:05
So one deals with radius.
00:07
So remember radius is half the diameter.
00:10
So you take diameter and 12 is diameter.
00:13
So you take 12 to by 2, which is 6.
00:16
That's 6 centimeters.
00:19
Two.
00:20
Well, they give you radius.
00:23
So you take twice the radius and you get to diameter.
00:27
So that's 50 yards.
00:31
Okay, circumference.
00:34
So three, so it's either circumference equals pi d, which three, they give you your diameter, so it's pi times 16, which equals 16 times 3 .14, 50 .24.
00:52
4, they give you its radius, so it's 2 pi r.
00:57
So that's 2 times pi times 7 .5.
01:04
So 15 times 3 .14 is 47 .1 inches...
