Exercise 2 Page 2

We want to find the area of the parallelogram in square centimeters. Notice that the base and the height are given in inches. Let's convert them to centimeters first, then we can determine the area.

Converting to Inches

We can use a conversion factor to convert the units. We are given a parallelogram with a base of

2.5 in

and a height of

2 in .

To cancel out inches, we will use the conversion factor

\frac{2 . 5 4 cm}{1 in} .

Let's begin with the base.

2.5 in

Mult

Multiply by $\frac{2 . 5 4 cm}{1 in}$

2.5 in \cdot \frac{2 . 5 4 cm}{1 in}

MoveLeftFacToNum

$a \cdot \frac{b}{c} = \frac{a \cdot b}{c}$

\frac{2 . 5 in \cdot 2 . 5 4 cm}{1 in}

CrossCommonFac

Cross out common factors

\frac{2 . 5 in \cdot 2 . 5 4 cm}{1 in}

SimpQuot

Simplify quotient

\frac{2 . 5 \cdot 2 . 5 4 cm}{1}

DivByOne

$\frac{a}{1} = a$

2.5 \cdot 2.54 cm

UseCalc

Use a calculator

6.35 cm