The required length of the rectangle is 89 m.
Given that,
The area of a rectangular field is 6942 m. If the width of the field is 78 m, what is its length is to be determined.
Perimeter is the measure of the figure on its circumference.
The rectangle is 4 sided geometric shape whose opposites are equal in lengths and all angles are about 90°.
The area of the rectangle = length * width
6942 = length * 78
length = 89 m
Thus, the required length of the rectangle is 89 m.
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