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Mathematics 7 Online
OpenStudy (anonymous):

Determine whether a triangle can be formed with the given side lengths. If so, use Heron's formula to find the area of the triangle. a = 240 b = 123 c = 207

OpenStudy (anonymous):

@campbell_st

OpenStudy (campbell_st):

ok... so there is a little rule for sides of a triangle. to form a triangle the sum of the shorter sides must be greater than the longer side so is 123 + 207 > 240 then you need to then use Herons formula if you get yes as an answer to the above equation. and here is a link to herons formula http://www.mathsisfun.com/geometry/herons-formula.html

OpenStudy (anonymous):

so its a yes

OpenStudy (campbell_st):

ok... then go and read how to use the formula..

OpenStudy (anonymous):

oh alright one sec

OpenStudy (anonymous):

s = 285 A = sqrt[285(285-240)(285-123)(285-207)] A = sqrt[285(45)(162)(78)] A = sqrt(162056700) A = 12730.15 or 810sqrt247

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