zad. 11
a)
a = 7cm
h = 3cm
P = a • h • ½ = 7cm • 3cm • ½ = 10,5cm²
b)
a = 11cm + 5cm = 16cm
h = 12 cm
P = a • h • ½ = 16cm • 12cm • ½ = 96cm²
;)
