Here , first we need to find the area of the pizza. And for that we use the formula of area of circle which is pi *r*r .
Now we have diameter =18 inches , so radius = 9 inches. Therefore area is
pi*9*9 =81 pi .
And this area is divided in 10 slices. SO area of each slice is
[tex] \frac{81 \pi}{10} inches^2 [/tex]
