URGENT: PLEASE COMPLETE THESE QUESTIONS WITH SOLUTIONS THAT ARE CORRECT. I WILL GIVE BRAINLIEST.

Answer:
a = 8.2 cm, b = 37.5 cm
Step-by-step explanation:
80/500 = (a/20.5)²
a²/420.25 = 80/500
a² = (80 * 420.25)/500 = 67.24
a = 8.2 cm
80/500 = (15/b)²
225/b²=80/500
b² = (225 * 500)/80 = 1406.25
b = 37.5 cm