find the area of traingle ABC if a = 10cm ,b = 3cm and c= 9cm help please <3 and i have my final exam tomorrow... so if u want to help me tonight for a while private message me we can work on msn together! yayyy ^_^ lolll
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Originally Posted by Noelle find the area of traingle ABC if a = 10cm ,b = 3cm and c= 9cm help please <3 and i have my final exam tomorrow... so if u want to help me tonight for a while private message me we can work on msn together! yayyy ^_^ lolll Hero's (Heron's?) formula says that the area of a triangle is where is called the semi-perimeter. -Dan
Originally Posted by topsquark Hero's (Heron's?) Heron's -- You can also combine Law of cosine and Law of sines to get the area, but I prefer to use Heron's Formula.
so is it supposed to be 10+3+9 = 22/2 = 11?
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