Maths Corner Week 5

Week 5

Hello my readers, welcome for another wonderful maths week. No one answered the question in the last week, so I am guessing my questions are a bit tough; I am reducing the difficulty of my questions. The answer for the last question was 25 cm. I encourage more people to answer. That means Lanre and Omobola remain in the royal family of maths. That gives them a streak of 3 weeks. The question for this week is:

What is 3 × 5

Please answer with names in the comments below.