Odpowiedź:
a)
P = 9cm * 11cm = 99 cm²
b)
P = 8 cm * 6 cm = 48 cm²
c)
P = 1/2 * (11 + 5) cm * 7 cm = 1/2 * 16 cm * 7 cm = 8 cm * 7 cm = 56cm²
d)
P = 1/2 * 8 cm * 12 cm = 4 cm * 12 cm = 48 cm²
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Odpowiedź:
a)
P = 9cm * 11cm = 99 cm²
b)
P = 8 cm * 6 cm = 48 cm²
c)
P = 1/2 * (11 + 5) cm * 7 cm = 1/2 * 16 cm * 7 cm = 8 cm * 7 cm = 56cm²
d)
P = 1/2 * 8 cm * 12 cm = 4 cm * 12 cm = 48 cm²