Answer: 30 centimeters
Step 1: Write an equation
Before we can solve for the area, we must first write an equation. In this question we are asked to examine a rectangle. Much like a square, rectangles follow the standard formula for area. For rectangles, area is equal to length times width. Let’s put this into an equation now.
= ×
This is our equation!
Step 2: Substitute numbers
Now that we have our equation, let’s revise it by substituting the information given to us in the question. Since we are solving for the area we need to leave as a variable. Instead, let’s change the to 10 and the to 3, as told in the question. Let’s do this now.
= ×
= 10 × 3
Step 3: Solve for area
For the final step, let’s solve for the area. We can begin by rewriting the equation.
= 10 × 3
Let’s end by solving the question on the right side of the equation. This will bring us our answer.
= 10 × 3
= 30
This is your answer! The area is equal to 30. Hope this helps! Comment below for more questions.