Perimeter of a triangle is 450 cm its sides are in the ratio 13:12:5.find are of triangle

Perimeter of a triangle is 450 cm its sides are in the ratio 13:12:5.f

1.	Perimeter of a triangle is 450 cm its sides are in the ratio 13:12:5.find are of triangle
Answer» If perimeter = 450,semi perimeter =450/2 i.e.= 225 Now, Let the sides be 13x,12x,5xIt is given that perimeter =450 Therefore,Sum of all sides = 450 13x +12x +5x = 450 30x = 450X= 450/30X=15Now, sides = 13x = 13×15 =195 12x =12×15=1805x =5×15=75Area,using heron\'s formula√s(s-a)(s-b)(s-c)√225(225-195)(225-180)(225-75)√225×30×45×150√3×3×5×5×2×3×5×3×3×5×2×3×5×5√3×3×3×3×3×3×5×5×5×5×5×5×2×2Taking out one no. From each pair.3×3×3×5×5×5×2×2 =6750cm² No