exam Maths Puzzle Numerical Ability

A ramp that is 20.0 feet long makes an angle of 12.5 degrees with the ground. What is the perpendicular distance from the top of the ramp to the ground?

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Find five points that satisfy the inverse variation equation y=20/x. Graph the equation and the points to make sure the coordinates of your points are correct. The trench for a sewer pipe is to be in the shape of a rectangular solid measuring 165 ft. long, 10 inches deep along both sides, and 15 inches wide at the top and the bottom. how