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h=20cm
a-jeden bok
1/2a-drugi bok
V=a*1/2a*h
1600cm³=1/2a² * 20cm/:20cm
1/2a²=80cm²/:1/2
a²=80cm² * 2
a²=160cm²
a=√160cm²
a=√16*10cm²
a=4√10cm
1/2a=1/2*4√10cm=2√10cm
odp.boki mają 4√10cm i 2√10cm
v=1600cm³
c=20cm
1600cm³=ab*20cm
80cm²=ab
a=1/2b
80cm²=1/2b*b
80cm²=1/2b² |*2
160cm²=b²
√160cm²=b
√16*10cm²=b
4√10 cm=b
boki to
c=20cm
b=4√10cm
a=2√10cm