2 2 12 12
4 81 = 108 3 2 108 = 72 3 4 72 = 96 3 2 96 = 64 3
12 t = 2 1 2 11 12 12 12 2 l 2 l 2 l
2 12
ò
ED = CB DA BA DE = BC DC BA DE = AB CD CB
H = AC h + h CD AB OA = AC AB CD AB SB = H 2 + OA + AB 2
= 90 = 1 90 = 45 2 1 = 45 45 = 67 30 2 1 = 67 30 67 30 = 101 15 2 1 = 101 15 101 15 = 151 52 30 2 1 = 90 90 = 135 2
365 1 4 365 1 4 365 1 4 365 1 4 365 1 4 365 1 4 365 1 4 365 1 4 365 1 4 365 1 4
365 1 4
l 1 1
í
2 1.57