Question

perimeter is the distance around a two - dimensional shape.
the perimeter of this rectangle is ________

Explanation:

Step1: Recall the formula for the perimeter of a rectangle

The formula for the perimeter \(P\) of a rectangle is \(P = 2\times(\text{length}+\text{width})\). Let the length \(l = 7\) and the width \(w=3\).

Step2: Substitute the values into the formula

Substitute \(l = 7\) and \(w = 3\) into \(P = 2\times(l + w)\). We get \(P=2\times(7 + 3)\).

Step3: Calculate the sum inside the parentheses first

According to the order of operations (PEMDAS: Parentheses, Exponents, Multiplication and Division, Addition and Subtraction), \(7+3=10\). So \(P = 2\times10\).

Step4: Perform the multiplication

\(2\times10 = 20\).

Answer:

\(20\)