## Trigonometry (11th Edition) Clone

Let $a = 1.4~in$ and let $b = 0.2~in$. We can find the radius of the original plate: $r = \frac{a^2+b^2}{2b}$ $r = \frac{(1.4~in)^2+(0.2~in)^2}{(2)(0.2~in)}$ $r = 5~in$ The radius of the original plate is 5 inches.