9.09 Story problems with area and perimeter
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Do you remember how to find the perimeter and area of a rectangle? Let's try this problem to practice.
Find the perimeter of a rectangle with a length of $3$3 m, and a width of $16$16 m.
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To solve problems involving the perimeter and area of rectangles, we will be using these formulas:
- Perimeter of a Rectangle $=$= $2$2$\times$×Length $+$+ $2$2$\times$×Width
- Area of a Rectangle $=$= Length$\times$×Width
This video looks at how we can use the area of a rectangle to solve real life problems.
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Question 1
Indu wants to frame her square window with a string of twinkle lights. The window has a side length of $3$3 ft.
Find the length of the string of twinkle lights that Indu needs.
Question 2
Minh is using sticky notes to cover his window. This uses up a total of $70$70 sticky notes, and Minh counts that there are $10$10 sticky notes along the length of the window.
How many sticky notes did Minh use along the width of the window?
A square is a special type of rectangle that has its length and width equal. This means that we can use the rectangle formulas for perimeter and area for a square as well.