a)60/12=5 b) -- c)60/20000=0,003 d)60/0,002=30000
P=a*b a) x*12=60 m2 12*5=60 b) 0,3m*x=60 m2 60m/0,3 =200 x=200m c) 60 m2 = 20000m * x 60/20000m = 0,003 x=0,003m d) 0,002m * x = 60 m2 60/0,002 = 30 000m x= 30 000m
a - szukany bok b - dany bok P - pole prostokąta wzór - P = a × b a) P = 60m² a = 12m b = ? P = a × b 60m² = 12m × b b = 60m² ÷ 12m b = 60m ÷ 12 b = 5m b) P = 60m² a = 3dm b = ? P = a × b 60m² = 3dm × b b = 60m² ÷ 3dm b = 60m² ÷ 0,3m b = 60m ÷ 0,3 b = 200m c) P = 60m² a = 20km b = ? P = a × b 60m² = 20km × b b = 60m² ÷ 20km b = 60m² ÷ 20000m b = 60m ÷ 20000 b = 0,003m b = 3mm d) P = 60m² a = 2mm b = ? P = a × b 60m² = 2mm × b b = 60m² ÷ 2mm b = 60m² ÷ 0,002m b = 60m ÷ 0,002 b = 60m × 500 b = 30000m b = 30 km
