Do you know your circle theorems?

Geometry Level 3

O O is the centre of the circle, which has a radius of 1200. A B AB has length 500. Find the length of C D CD to 3 significant figures.


The answer is 26.3.

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1 solution

E Koh
Jun 29, 2017

CD=1200-sqrt(1200^2 - (500/2)^2) = 26.331

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