Odpowiedź :
Odpowiedź:
IABI = ICDI = 2/3 cm
IADI = IBCI = 3/5 cm
P - pole = IABI * IBCI = 2/3 cm * 3/5 cm = 2 cm * 1/5 cm = 2/5 cm² = 0,4 cm²
o - obwód = 2(IABI + IBCI ) = 2(2/3 + 3/5) cm = 2(10/15 + 9/15) cm =
= 2 * 19/15 cm = 38/15 cm = 2 8/15 cm = 2,5(3) cm