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Question

Area of a pizza is one-fourth of that of a cake. What is the ratio of their radii? [3 MARKS]


Solution

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Let the radius of the pizza be r1 and radius of the cake be r2.
Given: area of the pizzaarea of the cake=14
Now, area of a circle = πr2
πr12πr22=14
r21r22=12
r1r2=12
Therefore, the ratio of their radii is 12

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