oblicz pole powierzchni trapezu w rzeczywistości
a =6cm
b=8dm
h=40mm
Skala wynosi 1:600
1cm-600cm
1cm=6m
a=6·6=36(m)
b=8dm=80cm 80·6=480(m)
h=4cm 6·4=34(m)
P=(a+b)·h/2
P=(36+480)·34/2=8772(m²)
Chyba tak
1/2 (a+b)*h
1/2(6+80)*0,4=17,2cm
17,2*600=10320
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1cm-600cm
1cm=6m
a=6·6=36(m)
b=8dm=80cm 80·6=480(m)
h=4cm 6·4=34(m)
P=(a+b)·h/2
P=(36+480)·34/2=8772(m²)
Chyba tak
1/2 (a+b)*h
1/2(6+80)*0,4=17,2cm
17,2*600=10320