What is the distance between the points at (8,4) and (5,1)?

This is a question from coordinate geometry. This is a very simple question. You can solve it by using distance formula.

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First we have to assume the coordinates as following:-

Let the coordinates of A be (8,4) and coordinates of B be (5,1).

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Further we have to assume:-

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Here we have distance formula:-

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This is your final answer.

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KINDLY VISIT WEB TO UNDERSTAND MORE CLEARLY.

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so mark-up is 0.4 multiplied by 180 = 72