This morning, I was doing my math summer homework. I wrote and wrote. Unfortunately, I met a very difficult problem. I've thought about it for a long time, but I can't figure it out. The problem is this: the circumference of a rectangle is 280 cm and the width is 40 cm. Take one side of this rectangle as the bottom, make a triangle with a height of 50 cm, and find the area of this triangle.

I read it and thought: Yes! This question is still a bit difficult! But no matter how hard it is, you have to survive! At this time, I asked my father for help. Father patiently told me how to solve it. Before my father finished, I suddenly realized that the problem was so simple. The formula is: 280÷2= 140 (cm) 140-40= 100 (cm).

100×50÷2=2500 (square centimeter).

I was ecstatic to see that I finally got the wrong question again and again. In fact, any topic is not that difficult, just don't think about it. As long as you think, any topic is very simple.

School is about to start, my homework is basically finished, and there is nothing too much trouble. My winter vacation plan has been completed very well. Let's have a new semester, fly high!