Odpowiedź:
a ) Obwód
L = ( 5 + 5 + 6 ) cm = 16 cm
Pole
P = 0,5*5*4,8 = 5*2,4 = 12
P = 12 cm²
=======================
b ) L = ( 7,5 + 11,7 + 12 ) cm = 31,2 cm
P = 0,5*11,7* 7,2 = 42,12
P = 42,12 cm²
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Verified answer
Odpowiedź:
a ) Obwód
L = ( 5 + 5 + 6 ) cm = 16 cm
Pole
P = 0,5*5*4,8 = 5*2,4 = 12
P = 12 cm²
=======================
b ) L = ( 7,5 + 11,7 + 12 ) cm = 31,2 cm
P = 0,5*11,7* 7,2 = 42,12
P = 42,12 cm²
============
Szczegółowe wyjaśnienie: