Use your textbook to solve the following problems. Please show your work.

3. Calculate:
Find the perimeter of a triangle with sides 11 inches, 5 inches, and 13 inches.
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7. Calculate:
Find the area of a rectangle measuring 25 feet long by 8 feet wide.
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Answer :

Sure, let's solve the given problem by finding the area of a rectangle with the given dimensions.

Step-by-Step Solution:

1. Identify the dimensions of the rectangle:
- Length [tex]\( l = 25 \)[/tex] feet
- Width [tex]\( w = 8 \)[/tex] feet

2. Recall the formula for the area of a rectangle:
- The area [tex]\( A \)[/tex] of a rectangle is given by the formula:
[tex]\[ A = l \times w \][/tex]

3. Apply the formula:
- Substitute the given values into the formula:
[tex]\[ A = 25 \, \text{feet} \times 8 \, \text{feet} \][/tex]

4. Calculate the area:
- Perform the multiplication:
[tex]\[ A = 200 \, \text{square feet} \][/tex]

Therefore, the area of the rectangle is [tex]\( 200 \)[/tex] square feet.