Multiply the length times the width, for example if l=5 and w=6, the area would be 30.
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What sort of figure? The first answer is correct only for the rectangle (though the answer should be 30 square units), but not for any other geometrical plane figure such as the circle or triangle.
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The remaining figure is the are of polygons that bounded by three dimensional figure .
count the boxes
NO. This is the way to get the volume of a prism, not the surface area of any three-dimensional figure. To find the surface area of a three-dimensional figure, you must find the area of each of its faces and then add the side-areas together.
Area of a square: A=s*s A=s2
find the square root