exam Maths Puzzle Numerical Ability

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The point (2,0) is on a circle with the center (-1,4). Find the length of the radius.

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exam Other Question

The distance from the ground level to the underside of a cloud is called the ceiling. A ground observer 950 m from a searchlight aimed vertically notes that the angle of elevation Divide and write each result in simplest form.
3/4 divided by 9