Question

Descubra quanto mede MN na figura abaixo:

Answer 1

Resposta:

ab=3

ac=4

3^2 + 4^2= bc

9+16=bc^2

25=bc^2

raiz de 25= bc

bc= 5

bc=5

cm=x

5^2+cm^2=13^2

25+x^2=169

cm^2=169-25

cm^2=144

cm= raiz de 144

cm=12

cm=12

cn=16

12^2+16^2=mn^2

144+256= mn^2

400=x^2

raiz de 400=mn

mn=20

MN= 20