Answers

2014-03-20T20:05:10+08:00
To have an area, here is the example of it:
Square =  s^{2}
Rectangle = (l)(w)
Triangle =  \frac{(b)(h)}{2}
Circle =  \pi  r^{2}
Trapezoid =  \frac{( b_{1} +  b_{2})h  }{2}
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