Question

4) The length of a rectangle is double its width. Its perimeter is 33cm. How long is its
width?

Answer 1

5.5 cm

Step-by-step explanation:

Let x be the width of the rectangle.

Since the length is double the width, the length would be 2x.

x can be found by solving the perimeter equation. The perimeter of the rectangle can be found by the equation:

$p = 2(l + w)$

$33 = 2(2x + x)$

$33 \div 2 = (2x + x)$

$16.5 = 3x$

$16.5 \div 3 = x$

$5.5 = x$

Therefore, the width of the rectangle is 5.5 cm.