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a - podstawa = 10 cm
h - wysokość = ?
P = ah/2
2P = ah
h = 2P/a = 2 razy 160/10 = 16 cm
odp
h = 16 cm
160 = ah÷2
320 = 10h
h = 32 cm
1/2*x*10=160
x*5=160
x=160:5
x=32