**Keyword** | **Description** | **Symbol / Usage** |

**area_circle** | Area of a circle having known radius | Area_Circle( radius[m] ) |

**area_poly** | Area of a well formed polygon having atleast 3 points | Area_Poly(x1[m], y1[m] , x2[m], y2[m], x3[m], y3[m] )…) |

**area_tri** | Area of a triangle with 3 arms | Area_Tri( arm1[m], arm2[m] , arm3[m] ) |

**area_trip** | Area of a triangle with 3 points | Area_Trip( x1[m], y1[m] , x2[m], y2[m], x3[m], y3[m] ) |

**dist_line** | Distance between two point | Dist_Line( x1[m],y1[m], x2[m], y2[m] ) |

**dist_place** | Distance between two place on earth | Dist_Place( lat1[deg], long1[deg], lat2[deg], long2[deg] ) |

**vol_cone** | Volume of a cone or frustum | Vol_Cone( height[m], gdia[m], sdia[m] ) |

**vol_sphere** | Volume of a sphere having radius known | Vol_Sphere( radius[m] ) |