Odpowiedź :
Odpowiedź:
a) 5^2 + 12^2 = c^2
25 + 144 = c^2
169 = c^2
c^2 = 169
c = √169
c = 13
5 + 12 + 13 = 30 [j^2]
b) 7,5^2 + b^2 = 12,5^2
56,25 + b^2 = 156,25
b^2 = 156,25 - 56,25
b^2 = 100
b = √100
b = 10
7,5 + 12,5 + 10 = 30 [j^2]
Twierdzenie Pitagorasa: [tex]a^2+b^2=c^2[/tex]
a)
[tex]5^2+12^2=c^2\\25+144=c^2\\169=c^2\\c^2=169 \\c=13[/tex]
Obwód: a+b+c
Obwód= 5+12+13=30
b)
[tex]7,5^2+b^2=12,5^2\\\\(\frac{15}{2})^2+b^2=(\frac{25}{2})^2\\\frac{225}{4}+b^2=\frac{625}{4}\\225+4b^2=625\\4b^2=625-225\\4b^2=400\\b^2=100\\b=10[/tex]
obwód: a+b+c
Obwód=7,5+12,5+10=30