Step 1: Use the formula for the perimeter of a rectangle.
The perimeter of a rectangle is given by:
\[
P = 2(\text{Length} + \text{Width})
\]
The dimensions of the rectangle are:
- Length = 35
- Width = 15
Step 2: Calculate the perimeter.
Substitute the values into the formula:
\[
P = 2(35 + 15) = 2 \times 50 = 100
\]