answer: 195cm
the photo should explain
The base of a right pyramid is a square with sides of 10". The slant height is 13" long. Find the total surface area of the pyra
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well, if the diameter is 5, thus its radius must be half that, or 2.5, and therefore, the radius of the one four times as much will be (4)(2.5).
Let's simply get their difference, since that'd be how much more is needed from the smaller to larger sphere.