To find the area of an arrow you can first divide it into two shapes, a rectangle and triangle. First find the area of the rectangle then the area of the triangle. Then when you find both areas of the two shapes add them up to get the area of the arrow. If you don't know how to find the area of those two shapes you are so far lost.
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Intial volume = final volume from this approach if you know any one of them % reduction in area or % elangation. you can calculate other
Work out the area of one end, then multiply by the length.
The area of a triangle can be calculated with one main formula. That is, A=(b*h)/2, where A is the area of the triangle, b is the base of the triangle, and h is the height of the triangle.
To calculate the area of a multi-strand wire you use the formula D = square root of (4S divided by pi), where S equals the number of strands times the area of one strand.
One acre equals 43, 560 square feet. To calculate the area in acres, multiply the length by the width in feet, then divide by the above figure.