Respuesta :
Answer:
A. 18
Step-by-step explanation:
Median of a trapezoid: Its length equals half the sum of the base lengths.
So the sum of the lengths is 15 + 21 is 36 and half is 18.
18 inches long of a cut will John need to make so that he cuts the tiles along the median.
Given that, the top base of each tile is 15 inches in length and the bottom base is 21 inches.
What is the median of a trapezoid?
The median of a trapezoid is the segment that connects the midpoints of the non-parallel sides.
The length of the median is the average of the length of the bases.
Now, add the top base and bottom base,
That is 15+21=36.
Now, divide that by 2
That is, 36/2= 18 inches.
Hence, the answer would be 18 inches.
Learn more about trapezoid visit:
brainly.com/question/8643562
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