Tag: semicircle

Angle inscribed in a semicircle

To solve the two problems below you need to know 1) The area of a circle is Πr2, with r as radius and that the area of a semicircle is of course  half of the circle, ½Πr2 and 2) the theorem the angle  in a semicircle theorem. Problem 1 Prove that the area of the solid…

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Semicircle Road Trip #1

Two roads connect Towns A and B. One passes through Town C which lies between A and B and the other a direct route. The roads are semicircular. Which road will you take if you want to conserve on gas? Why? Try this problem with your Facebook friends. It’s not that hard. Tricky, maybe. Like…

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