the length of a triangle is R cm the with it is 5 cm shorter than the length write and simplify an expression for the perimeter of  the rectangle

To express the perimeter of a rectangle with length \( R \) cm and width \( R - 5 \) cm (since the width is 5 cm shorter than the length), we can follow these steps:

### Formula for the perimeter of a rectangle:
\[
\text{Perimeter} = 2 \times (\text{Length} + \text{Width})
\]

### Substituting the values:
\[
\text{Perimeter} = 2 \times (R + (R - 5))
\]

### Simplifying:
\[
\text{Perimeter} = 2 \times (R + R - 5)
\]
\[
\text{Perimeter} = 2 \times (2R - 5)
\]
\[
\text{Perimeter} = 4R - 10
\]

So, the simplified expression for the perimeter of the rectangle is \( 4R - 10 \) cm.

Would you like further details on this? 

Here are some related questions to consider:
1. How would the expression change if the width were 5 cm longer than the length?
2. What is the perimeter if \( R = 8 \) cm?
3. How do you calculate the area of this rectangle?
4. What if both the length and width were decreased by 2 cm?
5. How would the perimeter change if both the length and width were doubled?

**Tip:** Always double-check if a problem asks for simplification or specific values before finalizing your answer.

The length of a triangle is R cm and the width is 5 cm shorter than the length. Write and simplify an expression for the perimeter of the rectangle.

Learn how to write and simplify an expression for the perimeter of a rectangle where the length is R cm and the width is 5 cm shorter. This problem covers essential geometry and algebra concepts, including perimeter calculation and expression simplification. Suitable for students in Grades 6-8.

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