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Callisto
 2 years ago
Geometry problem #2
*Old rule: no calculator!*
Callisto
 2 years ago
Geometry problem #2 *Old rule: no calculator!*

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FoolForMath
 2 years ago
Best ResponseYou've already chosen the best response.0Area of the polygon12 * area of the 1 cm side equilateral triangle. Am I missing something?

AccessDenied
 2 years ago
Best ResponseYou've already chosen the best response.3You could find the area of the entire polygon by breaking it into triangles and multiplying the area of that triangle by 12: dw:1338109350047:dw If you divide that triangle in half, it becomes a right triangle so you can use the magic of trigonometric functions to find the height. dw:1338109449920:dw Once you have the height, you can just find the area of the triangle using "A=1/2 bh", and then multiply by 12 to get area of the regular 12sided polygon.

Ishaan94
 2 years ago
Best ResponseYou've already chosen the best response.0Hmm why is everyone viewing it?
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