Question

The perimeter of a triangle is 72 metres. The sides are in the ratio 3 : 4 : 5. Find the length of the longest side. ​

Answer 1

Answer:

Step-by-step explanation:

Let the three sides be 3x, 4x and 5x.

Perimeter = 72m

(sum of three sides) =72m

3x + 4x + 5x = 72m

12x = 72m

x =72/12 metre

x= 6metre

Longest side = 5x = 5*6 = 30 metre

Other sides are 4x =4*6= 24 metre

3x= 3*6 =18 metre