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Area = length x width

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Q: How do you figure out the area of a rectangle?
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How do you find the area of a compound figure with there is a trapezoid and a rectangle?

Work out each figure separately then add them together: Area of a trapezoid = 0.5*(sum of parallel bases)*height Area of a rectangle = length*height


What happens to the area of a figure when the scale of the figure changes?

To find the new area, you have to multiply the original area by the square of the scale change. For example, you have a rectangle with adjacent sides of 3 and 4. Another rectangle has the same dimensions but with triple the scale. The original rectangle's area is 12. Multiply that by 9, which is the square of the new scale, and you get an area of 108. That matches up with the area of the new rectangle, which has adjacent sides of 12 and 9.


The perimeter of the figure is 42.5cm. what formula do you use to figure out the area?

It depends what shape the figure is ! If it's a square or rectangle - you would need one more piece of information (the length of one side).


Why area of rectangle is lbh?

I assume lbh in the question means length, base (or width) and height. Those three dimensions multiplied together calculate the volume, not the area, of the figure for cubic dimension. The area is calculated by multiplying the length and the width for squared dimension. In simpler terms; Area of rectangle is lw; Volume is lwh.


How do you find the length of a rectangle given the width and area?

the area of a rectangle = length x widthwe can rearrange this to give uslength of a rectangle = area/ width