Odpowiedź:
a)
[tex]pp = \frac{a \times h}{2} \\ pp = \frac{120 cm\times 80cm}{2} = \frac{9600 {cm}^{2} }{2} = 4800 {cm}^{2} [/tex]
[tex]V = pp \times h \\ V = 4800 {cm}^{2} \times 200cm \\ V = 960000 {cm}^{3} [/tex]
b) podłoga 120cm x 200cm =24000cm²
boki (2 są takie same )
[tex] {60}^{2} + {80}^{2} = {x}^{2} \\ 3600 + 6400 = {x}^{2} \\ 10000 = {x}^{2} \\ \sqrt{10000} = \sqrt{x} \\ 100 = x[/tex]
200 x 100 = 20000 - powierzchnia boku
