Frustums of sphere

Geometry Level pending

You are given a frustum of a sphere with height of 4 cm, upper base radius of 2 cm, and lower base radius of 3 cm.. If the square of the radius of the sphere can be expressed in the form of a b \frac ab for coprime positive integers a a and b b , find the value of a − b a-b .


The answer is 633.

Mark Vincent Esmeralda Mamigo by Mark Vincent Esmeralda M… , 24

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2 solutions

Jun Arro Estrella
Nov 12, 2015

Kamao man lage kag Latex Mark!!!!!!

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Wala ko kahibaw ana arro, automatic na 'guro na, haha! :3

Mark Vincent Esmeralda Mamigo - 5 years, 7 months ago

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Pero gi edit tngale nang calvin lin nuh? hahaa Na latex mn sad akong mga problems uban

Jun Arro Estrella - 5 years, 7 months ago

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Basin pud arro, hehe.. Na in-ana pud ang uban nakong mga problems, imbis bati'g nawng kay na nindot kay na Latex.. :D

Mark Vincent Esmeralda Mamigo - 5 years, 6 months ago

The formula in finding the radius of a sphere given the radii of two bases and its height is r^2=[(a^2+b^2+h^2)^2-4(a^2)(b^2)]/4(h^2)..

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