Question

Zad 49 ratujcie to na jutrooo

Answer 1

Korzystamy ze wzoruOb = 2a + 2b

a)
a = 17cm
b = 25cm
Ob = 2 * 17 + 2 * 25 = 34 + 50 = 84

b)
a = 42dm
b = 18dm
Ob = 2 * 42 + 2 * 18 = 84 + 35 = 120

c)
a = 51mm
b = 4,5mm
Ob = 2 * 51 + 2  * 4,5 = 102 + 9 = 111

Licze na naj :)