Odpowiedź:
Czasopismo
P= 2 dm x 2,8 dm=
[tex]5.{6}^{2} [/tex]
Wizytówka Jana Kowalskiego:
[tex]90mm \times 50mm = 4500m {m}^{2} [/tex]
[tex]9cm \times 5cm = 45m {m}^{2} [/tex]
Karta do gry:
[tex]6cm \times 9cm = 54c {m}^{2} [/tex]
[tex]0.6dm \times 0.9dm = 0.54d {m}^{2} [/tex]
Płytka:
[tex]30cm \times 30cm = 900c {m}^{2} [/tex]
[tex]3dm \times 3dm = 9d {m}^{2} [/tex]
Fotografia:
[tex]15cm \times 10cm = 150c {m}^{2} [/tex]
[tex]1.5dm \times 1dm = 1.5d {m}^{2} [/tex]
Dywan:
[tex]3m \times 2.5m = 7.5 {m}^{2} [/tex]
[tex]30dm \times 25dm = 750d {m}^{2} [/tex]
Podręcznik do matematyki:
[tex]16cm \times 23cm = 16cm \times 20cm + 16cm \times 3cm = 320c {m}^{2} + 48c {m = 368c {m}^{2} [/tex]
[tex]1.6dm \times 2.6dm = 3.68d {m}^{2} [/tex]