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CBSE Class 9 Answered

The sides of a triangle are in the ratio 4:5:5 and its perimeter is 168 m. Find the area of the triangle.
Asked by Topperlearning User | 28 Aug, 2017, 02:54: PM
answered-by-expert Expert Answer

Length of sides are: begin mathsize 12px style 4 over 14 cross times 168 equals 48 space straight m comma space 5 over 14 cross times 168 equals 60 space straight m comma space fraction numerator begin display style 5 end style over denominator begin display style 14 end style end fraction cross times 168 equals 60 space straight m end style

Therefore, a = 48 m, b = 60 m and c = 60 m

begin mathsize 12px style straight S equals fraction numerator straight a plus straight b plus straight c over denominator 2 end fraction end style

S = begin mathsize 12px style fraction numerator 48 plus 60 plus 60 over denominator 2 end fraction equals 84 end style

Area of =

Answered by | 28 Aug, 2017, 04:54: PM

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