Odpowiedź :
x = 12cm - 6cm = 6cm
x² + h² = 8²
h² = 64 - 6²
h² = 64 - 36
h² = 28
h = 2√7cm
a = 12cm
b = 6cm
P = 1/2 * (a + b) * h
P = 1/2 * (12 + 6) * 2√7
P = 1/2 * 18 * 2√7
P = 18√7 cm² ---------- odpowiedź
x = 12cm - 6cm = 6cm
x² + h² = 8²
h² = 64 - 6²
h² = 64 - 36
h² = 28
h = 2√7cm
a = 12cm
b = 6cm
P = 1/2 * (a + b) * h
P = 1/2 * (12 + 6) * 2√7
P = 1/2 * 18 * 2√7
P = 18√7 cm² ---------- odpowiedź