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A golden rectangle has a length of 10 cm. The ratio of its length to its width is (1 + sqrt 5)/2 what is the width of the rectangle in simplified radical form? I need to know the formula to solve other problems like this.
5 years ago

Answers

oobleck
10/w = (1+√5)/2
w = 10*2/(1+√5) = 20(√5-1)/(5-1) = 5(√5-1) = 10 * (√5-1)/2
5 years ago
Johnny
How did the 5 - 1 get on the denominator?
5 years ago
Johnny
On step 2
5 years ago

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