A certain cake recipe states that the cake should be baked in a pan 8 inches in diameter. If Salma wants to use the recipe to make a cake of the same depth but 12 inches in diameter, by what factor should she multiply the recipe ingredients?

A 2.5

B 2.25

C 1.5

D 1.33

Solution

Correct Answer: Option B

For 8 inch ,radious =8/2 = 4 inch

Area of cake = πr2h = 16πh

Again for 12 inch cake , area = 36πh

Factor = 36πh/16πh = 2.25

Solution

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