SM1LEM0RE SM1LEM0RE

21-04-2017
Mathematics

contestada

a 20 cm drinking straw sits diagonally in a glass of radius 3 cm and height 10 cm. what length of straw in the glass?

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Roswalien Roswalien

21-04-2017

This is a Pythagorean Theorem problem. We don't need to know how long the whole straw is.

3^2 + 10^2 = x^2
9 + 100 = x^2
109 = x^2
x = sqrt 109

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