one base of a trapezoid is 10 ft. long, the altitude is 4 ft., and the area is 32 sq. ft. find the length of a line parallel to and 1 ft. above the 10-ft. base and included between the legs of the trapezoid.

1 answer

The other base is 6

Since we want a line 1/4 of the way up the height, it will be 1/4 of the way from 10 to 6, or

10 - 1/4 (10-6) = 9
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