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Ptr = a²√3 / 4
htr = a√3 / 2
32√3 = a²√3 / 4
32 = a²/4 / ×4
128 = a²
a = √128
a = √16 × 8
a = 4√4 × 2
a = 8√2
htr = 8√2 × √3 /2
htr = 4√6
P = (a²√3):4
32√3 = (a²√3):4 /*4
a²√3 = 128√3 /:√3
a² = 128
a = √128
a = √64*2
a = 8√2
h = (a√3):2
h = (8√2*√3):2
h = (8√6):2
h = 4√6