Odpowiedź:
zad.1
5cm- jeden bok
5 * 3 = 15cm - drugi bok
P = 15 * 5 =75cm^ (kwadratowych)
zad.2
Obw = 6dm = 60 cm
a = 60/4 = 15 cm
P = 15 * 15 = 225cm^
zad.3
P = 25 cm^
a = [tex]\sqrt{25}[/tex]
a = 5 cm
Obw = 5 * 4 = 20cm
zad.4
7cm - jeden bok
10cm - drugi bok
Obw = 10*2 + 7*2 = 34cm
P = 10 * 7 = 70cm^
zad.5
d1 = 12cm
d2 = 12 * 3 = 36cm
P = d1*d2/2
P = 12*36/2
Skracamy 2 i 12
P = 6 * 36 = 216cm^
zad.6
P = 4,5 * 2,5 = 11,25m^
P kwadratu = 10*10 = 100cm^
100cm^ = 0,01m^
11,25/0,01 = 1125
btw to 6 jest chyba źle XD
