Question

Usando a propriedade b²=n²+h² encontre o valor de b.
( ) b=3
( ) b=4
( ) b=0
( ) b=5
( ) b=1

Answer 1

h² = (12/5)² + (9/5)²
h² = (144/25) + (81/25)
h² = 225/25
h = √225/25
h = 15/5
h = 3

Answer 2

$b^{2} = n^{2} + h^{2}$

$b^{2} = ( \dfrac{9}{5} )^{2} + (\dfrac{12}{5})^{2}$

$b^{2} = \dfrac{81}{25} + \dfrac{144}{25}$

$b^{2} = \dfrac{225}{25}=9$

$b= \sqrt{9} =3$