Question

first we must set up our equation using the pythagorean theorem: a² + b² = c². 4² + b² = 13². 16 + b² = ?. hint: calculate the value of 13².

Explanation:

Step1: Calculate $13^2$

$13\times13 = 169$

Step2: Substitute into the equation

Since $16 + b^{2}=13^{2}$, then $16 + b^{2}=169$.

Answer:

$169$