Question

Triangle is 216 cm square and its sides are in the ratio 3 is to 4 is to 5 the perimeter of the triangle is

Answer 1

answer is 72 cm......

....

Answer 2

216

Step-by-step explanation:

Let the sides be x

then,3x,4x,5x

$Area=216\\3x+4x+5x=216\\12x=216\\x=18$

so length of first side of triangle $a=3\times18=54cm$

    length of second side of triangle $b=4\times18=72cm$

    length of second side of triangle $c=5\times18=90cm$

Perimeter of triangle = $a+b+c$

                                    = $54+72+90=216$