Discount on Pizza
Ans - let height be same for both pizza volume of 8" pizza is: pi * (8 * 8) * h, where h is height of pizza and pi is constant value = pi * 64 * h volume of 12" pizza is: pi * (12 * 12) * h, where h is height of pizza and pi is constant value = pi* 144 * h
so price of 12" pizza is - (pi * 144 * h * 3.99) / (pi * 64 * h) = 8.97 approx discount given - 8.97 - 6.73 = 2.24
so percentage of discount = 2.24 * 100 / 8.97 = 25 % approx
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