For ease, let's make it a 10" diameter pizza.
so the square has a diagonal of 10"
using pythagorean theorem we can find the sides of the triangle formed by the diagonal through the square
10^2 = 2 (side^2) (since each side is the same length)
100/2 = side^2
50 = side^2
7.07 = side length
so the square has an area of 7.07 x 7.07 = 50 sq inches
the total area of the ROUND pizza is pi x r^2= 3.14 x (5^2) = 78.54 sq inches
How much is left after taking out the square? 78.54-50 = 28.54 sq inches remaining.
Question asks what per centage remains
28.54/78.54 x 100% = 36% remains.
