a=24cm
b=0,75*24=18cm
b=18cm
24cm-18cm=6cm <-różnica podstaw
h=0,80*6=4,8cm
h=4,8cm
P=½(a+b)h
P=½(24+18)*4,8
P=½*42*4,8
P=100,8cm²
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a=24cm
b=0,75*24=18cm
b=18cm
24cm-18cm=6cm <-różnica podstaw
h=0,80*6=4,8cm
h=4,8cm
P=½(a+b)h
P=½(24+18)*4,8
P=½*42*4,8
P=100,8cm²