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Answer to Q55
During a banquest, I finished a 18cm diameter pizza and my wife finished two 12cm diameter pizza. Who ate the most?
Let's start by calculating the surface area of the pizza I ate. πr²
Diameter = 18cm. Radius = 18 ÷ 2 = 9cm
A = π x 9²
A = 254.47cm²
And my wife ate two 12cm diameter pizzas
Diameter = 12cm. Radius = 12 ÷ 2 = 6cm
A = π x 6²
A = 113.10cm²
But she ate 2 so,
A = 113.10 x 2 = 226.20cm²
I ate 254.47cm² of pizza and she ate 226.20cm²
Answer: Me
[Moral of the question: there are more pizza in a single 18cm diameter than in two 12cm diameter]
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