Odpowiedź :
a) 9² + 18² = h²
81 + 324 = h²
405 = h² /√
h = 9√5
b) h = a√3/2
a√3/2 = 15cm / ·2
a√3 = 30cm
a = 30/√3
a = (30√3)/3
a = 10√3 cm
a) 9² + 18² = h²
81 + 324 = h²
405 = h² /√
h = 9√5
b) h = a√3/2
a√3/2 = 15cm / ·2
a√3 = 30cm
a = 30/√3
a = (30√3)/3
a = 10√3 cm