In ∆ABC AB=6cm, BC=7cm and its perimeter is 18cm . Find the length of AC and what is its 'S'?
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I used a simple method to solve this answer
Answered by
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hi frnd
given
perimeter=18
AB+BC+CA=18
6+7+AC=18
AC= 18 - 13
AC=5
S= (AB+BC+AC)/2
S= 18/2
S= 9
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