Question

Help me in these equation9^2 + b^2 = 15.81^2

Answer 1

b = 13

Step-by-step explanation

We want to solve the equation:

`9^2+b^2=15.81^2`

To do this, simplify the equation:

`81+b^2=249.96`

Isolate b:

`\begin{gathered} b^2=249.96-81 \\ b^2=168.96 \\ Find\text{ the square root of boths side:} \\ b=\sqrt[]{168.96} \\ b=13 \end{gathered}`

That is the answer.