Zadanie 1
a = lBCl = 5 cm
c = lACl = 13 cm
b = lABl = ?
a² + b² = c²
5² + b² = 13²
25 + b² = 169 l -25
b² = 144
b = √144
b = 12 cm = lABl
Ob. = 2 · a + 2 · b
Ob. = 2 · 5 + 2 · 12= 10 + 24 = 34 cm
P = a · b
P = 5 · 12 = 60 cm²
Zadanie 2
a = lEFl = 18 cm
b = lFGl = 6 cm
c = lEGl = ? - przekątna
a² + b² = c²
18² + 6² = c²
324 + 36 = c²
c² = 360
c = √360 = √36·10
c = 6√10 cm
lEGl = c = 6√10 cm
