A rectangle has a length of 12 meters and a width of 400 centimeters. What is the perimeter, in cm, of the rectangle?

3200 cm

Step-by-step explanation:

Convert the meters to cm

There are 100 cm in a meter, so 12m= 1200 cm.

Since perimeter= w + w + l + l, plug in 1200 for l and 400 for w

1200 + 1200 + 400 + 400

= 3200 cm

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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