Question

the side of tringle are in the ratio 15:13:14 and its perimeter is 168cm.find the area of the triangle.

Answer 1

your answer is :

it is given the perimeter is 168.

ratio is given 15:13:14

sum of the ratio =42

sides of triangle are,

=>15/42*168=15*4=60cm

=>13/42*168=13*4=52cm

=>14/42*168=14*4=56cm.

thus, sides of triangle are 60cm,52cm,56cm

by the heron's formula i.e √s(s-a)(s-b)(s-c)

=> √168(168-15)(168-13)(168-14)

=> √168*153*155*154

=>√(2square*2*3*7)*(3square*17)*(5*31)*(2*7*11)

after opening the brackets,write all square on one side and single whole no. on the other.

=> 2*2*3*7√3*17*5*11*31

=> 84√86,955 cm2

hope it helped ya'.

plzz mark brainliest,

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