Question

1. in its frame, a rectangular painting measures 84 centimeters long and 56 centimeters wide. how much wall space does the painting cover? explain the strategy you used to find the answer.

Explanation:

Step1: Recall area formula

The area $A$ of a rectangle is given by $A = l\times w$, where $l$ is the length and $w$ is the width.

Step2: Substitute values

Given $l = 84$ cm and $w = 56$ cm, we have $A=84\times56$.
$84\times56=(80 + 4)\times56=80\times56+4\times56=4480+224 = 4704$ square - centimeters.

Answer:

4704 square centimeters