Odpowiedź:
1. a) 24*17 = 408 [tex]cm^{2}[/tex]
b) [tex]\frac{(12+8)*9}{2}[/tex] = 90[tex]m^{2}[/tex]
c) [tex]\frac{7*14}{2}[/tex] = 49[tex]cm^{2}[/tex]
d) 14*9 = 126[tex]m^{2}[/tex]
2. 10 - 3 = 7
P= 7*6 = 42[tex]cm^{2}[/tex]
P = 3*2 = 6[tex]cm^{2}[/tex]
Pc = 42 + 6 = 48[tex]cm^{2}[/tex]
3. [tex]\sqrt{64}[/tex] = 8
4. 28 : 4 = 7
7*7 = 49[tex]cm^{2}[/tex]
5.[tex]\frac{84*64 }{2}[/tex] = 2688[tex]cm^{2}[/tex]
2688 * 2 = 5376[tex]cm^{2}[/tex]
