Question

Triangle ABC is shown below. Its original

lengths are multiplied by 150%. What is the
new perimeter of A'B'C'?

Answer 1

75

Explanation:

21 × 150% = 31.5

20 × 150% = 30

9 × 150% = 13.5

Perimeter formula: a + b + c

31.5 + 30 + 13.5 = 75