Sunday, July 17, 2011

GCSE question help...3D co-ordinates?

√((3.5 - 0)^2 + (5 - 0)^2 + (4 - 0)^2) = √((3.5^2 + 5^2 + 4^2) = √(12.25 + 25 + 16) = √53.25 ≈ 7.297

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