Question

Pomocy






Zadanie 1 i 2, Strona 130

Answer 1

zadanie 1

P = a * b

a) 3cm = 30mm

P = 30mm*3mm=90mm2

b) 2km = 2000m

P = 2000m*10m=20000m2

c) 100m=10000cm

P = 10000cm*100cm=1000000cm2

d) 0,5dm=5cm

P = 5cm*50cm=250cm2

zadanie 2

P = a * b

426cm = 4,26m

987cm = 9,87m

P = 4,26m * 9,87m = 42,0462m2≈42m2