.190metres
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A standard pencil is 19cm (7.5in) long.
4 * length of side = 76 cm
The perimeter of a rectangle is simply the sum of its four sides. In this case - 12 + 19 + 12 + 19 = 62
Take its length and multiply by its width. For example:- Length-30cm,Width-19cm Area=length x width =30x19(cm) =570 units2. Answer=The area of the rectangle is 570 units2. Note: Make sure to use the same units for length and width. The result is measured in units².
I find the area by applying the standard formula for the area of a triangle, which is the length of the base multiplied by the height all divided by two. You should too.