Question

Hello! I think I have this right but I'm unsure of my answer

Answer 1

Okay, here we have this:

Considering the provided information, we are going to calculate the requested perimeter, so we obtain the following:

According to the given information we know that the jewel has the shape of a right triangle, and we know the two shortest measurements, that is, the legs, therefore to find the hypotenuse we will use the Pythagorean theorem, and we have:

`\begin{gathered} h^2=5^2+12^2 \\ h^2=25+144 \\ h^2=169 \\ h=√(169) \\ h=13\text{ mm} \end{gathered}`

So let's remember that the perimeter is equal to the sum of all the sides of a triangle, therefore we have:

Perimeter=5mm+12mm+13mm

Perimeter=30mm

Finally we obtain that the correct answer is the fourth option.