Question

Given the formula for the perimeter of a rectangle where l represents the length and w represents the width. 2(l + w) What does the 2 represent in this formula? A) The 2 represents the perimeter. B) The 2 represents the two width pairs. C) The 2 represents the two length pairs. D) The 2 represents the two sets of length and width pairs.

Answer 1

The 2

A rectagle has 4 sides. There are 2 lengths and 2 widths.

The would be written like this to start with

P = L + L + W + W

P = 2L + 2W             Using the distributive property 2 can be taken outside the brackets

P = (2L + 2W)

P = 2(L + W)              You have shown how the 4 sides can be written more efficiently.

The answer is D <<< Answer