the sides of a triangle are in the ratio 3:5:7.if the pereimeter is 60 cms,the longest side is Choose the correct choice from the following options
A) 7 B) 30 C) 28 D) 25 E) 16
3x+5x+7x=60   15x=60   x=4   longest side=7*4= 
<gadget id="calculator">7*4</gadget>
<output>28</output>
28   ANSWER:28
<result>C</result>
the sides of a triangle are in the ratio 3:5:7.if the pereimeter is 60 cms,the longest side is