1.Oblicz pole kwadratu o boku:
a) 11cm
b) 40,2dm
c) trzy całe i dwie piąte metra
d) 2m 7cm
2.Oblicz pole prostokąta o wymiarach:
a) 6cm x 12cm
b) 3dm x 25cm
c) 5m x 1,5dm
d) 8cm x 70mm
e) cztery całe i jedna druga metra x 3,2m
f) 3m 5cm x 2m 15cm
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a) bok kwadratu a=11cm
P=a²=11²=121cm²
b)a=40,2dm P=(40,2)²=1616,04dm²
c)a=3⅖m P=(3⅖)²=(17/5)² =289/25=11,56m²
d)a=2m7cm P=(207cm)²=42849cm²=4,2849m²
zad2
a) a=6cm i b=12cm P=a·b=6·12=72cm²
b)a=3cm i b=25cm=2,5dm P=3·2,5=7,5dm²
c)a=5m =50dm b=1,5dm P=50·1,5=75dm²
d)a=8cm b=70mm =7cm P=8·7=56cm²
e)a=4½m b=3,2m P=4,5 ·3,2=14,4m²
f)a=3m5cm b=2m15cm P=305cm ·215cm =65575cm²=6,5575m²