377,379
a2 = 25 + 144
a = 13
S = 5*12*4/2 = 240
h2 = 169 — 25
h = 12
S = (10 + 20)/2*12 = 180
h = 64 — (BC/2)2 = 4√3
S = (8+16)/2 * 4√3 = 48√3
377,379
a2 = 25 + 144
a = 13
S = 5*12*4/2 = 240
h2 = 169 — 25
h = 12
S = (10 + 20)/2*12 = 180
h = 64 — (BC/2)2 = 4√3
S = (8+16)/2 * 4√3 = 48√3