what is the answer

Question

the top of a pizza box has an area of 64 square inches by what scale factor would the pizza box top need to be dialatd to fit a large pizza that has the radius of 7 inches 

 

Answer 1

Area of pizza:

 

πr² = π(7 in)² = 153.94 in²

 

You need to expand the box top area by a ratio of 153.94/64 = 2.41