**Area Formulas**

1. Given base and altitude

Triangle: Given base and height |

Area = 1/2 (b)(h)

2. Given two sides and an Angle

Triangle Given 3 sides a,b,c |

Area = sqrt (s(s-a)(s-b)(s-c))-----> Heron's Formula

where s= (a+b+c)/2

4. Triangle inscribed in a circle

r= radius of the circle |

Area = (a b c)/ 4r

5. Given a circle inscribed in a Triangle

r = radius of the circle |

Area = rs

s = ( a+b+c/) 2

6. Circle escribed by the triangle

where a is the side tangent to the circle |

Area = r (s-a)

s = ( a+b+c/) 2