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A flag is $100$ inches tall and $145$ inches long. What is its perimeter? $\newline$ $\newline$ $\_\_\_\_$ inches

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Area and perimeter: word problems

Full solution

Q. A flag is

100

inches tall and

145

inches long. What is its perimeter?

\newline

\newline

\_\_\_\_

inches

Understand formula for perimeter: Understand the formula for the perimeter of a rectangle. $\newline$ The formula for the perimeter $P$ of a rectangle is $P = 2(\text{length} + \text{width})$ .
Identify length and width: Identify the length and width of the flag. $\newline$ The flag is $100$ inches tall (width) and $145$ inches long (length).
Plug in values: Plug in the values of length and width into the perimeter formula. $\newline$ $P = 2(\text{length} + \text{width})$ $\newline$ $P = 2(145 \text{ inches} + 100 \text{ inches})$
Perform addition: Perform the addition inside the parentheses. $\newline$ P = $2$ ( $245$ inches)
Multiply to find perimeter: Multiply the sum by $2$ to find the perimeter. $\newline$ P = $2$ $\times$ $245$ inches $\newline$ P = $490$ inches

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