P = (a²\|3) /4
\| oznacza pierwiastek
a) a = 5\|3 cm
P = ((5\|3)²•\|3) /4 = (5²•\|3² •\|3) /4 = (25•3 • \|3) /4 = (75\|3) /4 cm²
b) a = 2\|3
P = ((2\|3)²•\|3) /4 = (2²•\|3² •\|3) /4 = (4•3 •\|3) /4 = (12\|3) /4 = 3\|3 cm²
c) a = 6\|6
P = ((6\|6)²•\|3) /4 = (6²•\|6² •\|3) /4 = (36•6 •\|3) /4 = 216\|3 /4 = 54\|3 cm²