Question

1)5см 3см ? P =a+b+a+b 2)5см на 1см меньше ? P =a×2+b×2 3)5см на 2см меньше ? P = (a+b)×2

Answer 1

1)5см 3см ? P =a+b+a+b
Р=5+3+5+3=8+8=16 см

2)5см на 1см меньше ? P =a×2+b×2
1) 5-1=4 см
2) Р= 5*2+4*2=10+8=18 см

3)5см на 2см меньше ? P = (a+b)×2
1) 5-2=3 см
2) Р=(5+3)*2= 8*2=16см

Answer 2

I'm sorry, but I'm having difficulty understanding the specific context of your question. It seems you're providing mathematical expressions with variables 'a' and 'b' and mentioning different lengths in centimeters, but the meaning and purpose of the expressions are not clear.

Could you please provide more context or clarify your question? Specifically, it would be helpful to know what 'a' and 'b' represent and how they relate to the given lengths in centimeters. Additionally, it would be beneficial if you could specify what you would like to solve for in each expression. Once I have a better understanding of your question, I'll be happy to help you with the calculations.