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d1 = przekątna 1
d2 = przekątna 2
* = razy
P - 24, 48 cm2
d1 - 7,2 cm
d2 - x
P = 1/2 * d1 * d2
P = 1/2 * 7,2 * x = 24,48
P = 3,6 * x = 24,48
x = 24, 48 : 3,6
x = 6,8
Spr.
P = 1/2 * d1 * d2
P = 1/2 * 7,2 * 6,8 = 24,48
Odp. Druga przekątna rombu ma 6,8 cm.
Liczę na naj :)