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The area of a triangle is …

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The area of a triangle is 150 cm2 and its side are in the ratio 3:4:5. What is its perimeter?
  • 3 answers

Kripa Daga 3 years, 10 months ago

60 cm

Abhoyjit Dutta 3 years, 10 months ago

Yess it is right

Gaurav Seth 3 years, 10 months ago

Let coefficient of ratios be X
a = 3x
b = 4x
c = 5x

Using Heron's Formula,
s = (3+4+5)x/2 = 12x/2 = 6x



Now,
a = 5*3 = 15 cm
b = 5*4 = 20 cm
c = 5*5 = 25 cm

Perimeter = 15+20+25 = 60 cm
 

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