Final answer:
To frame a picture with dimensions 11 inches by 15 inches, you calculate the perimeter, which is 52 inches, and that is the amount of material needed for the frame.
Step-by-step explanation:
- To calculate how much material you need for the frame of a rectangular picture with side lengths of 11 inches and 15 inches, you need to find the perimeter of the rectangle. The formula to find the perimeter (P) of a rectangle is P = 2(l + w), where 'l' is the length and 'w' is the width of the rectangle.
For your picture:
- Length (l) = 15 inches
- Width (w) = 11 inches
Substituting the values into the formula, we get:
P = 2(15 inches + 11 inches) = 2(26 inches) = 52 inches
So, you will need 52 inches of material for the frame to go around the outer edges of your picture.