If the area of a small size pizza is 78.5 in², what size pizza box would required for the small pizza? (Note: Pizza boxes are calculated according to the length of one side.)

a. 12 in

b. 11 in

c. 9 in

d. 10 in

d. The area of a small pizza is 78.5 in². The question requires us to evaluate the diameter of the pizza in order to choose the most appropriate box. Area is similar to πr². Thus, 78.5 = πr²; divide by π (3.14); 78.5 ÷ 3.14 = πr² ÷ 3.14; 25 = r²; 5 = r. The diameter is twice the radius or 10 inches. Thus, the box is also 10 inches.