The sides of a triangle are in the ratio 17:18:19. If the perimeter of the triangle is 1944 cm, what is the length of the longest side in metres?
Show answer & explanation
Correct answer: D
Explanation
Sum of ratios = 17 + 18 + 19 = 54
Value of one ratio unit = 1944 / 54 = 36 cm
Longest side = 19 × 36 = 684 cm
= 684 / 100
= 6.84 meters