Tw. Pitagorasa:
a² + 5² = 13²
a² + 25 = 169
a² = 169 - 25
a² = 144
a = [tex]\sqrt{144}[/tex]
a = 12
Tw. Pitagorasa:
[tex]7^{2} + 5^{2} = c^{2}[/tex]
49 + 25 = c²
c² = 74
c = [tex]\sqrt{74}[/tex]
Obwód:
5 + 5 + 12 + [tex]\sqrt{74}[/tex] = 22 + [tex]\sqrt{74}[/tex]
Pole:
P = [tex]\frac{(a+b)*h}{2}[/tex] = [tex]\frac{(5+12)*5}{2} = \frac{17 * 5}{2}[/tex] = 42,5 cm²
