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Geometry

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One pizza has a diameter twice the diameter of a smaller pizza. what is the rato of the area larger pizza to the area of the smaller pizza?

  • Geometry - ,

    4/1

    proof:
    let the radius of the smaller be r
    let the radius of the larger be 2r

    area of smaller = πr^2
    area of larger = π(2r)^2 = 4πr^2

    ratio of larger to smaller = 4πr^2/(πr^2) = 4/1 or 4 : 1

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