The larger base of the trapezium is 4: 3 to the midline, and the smaller base is 12cm. Find the middle line of the trapezoid.
| December 5, 2020 | education
Larger base = 4x, middle line = 3x, smaller base = 12 cm.The middle line is equal to half the sum of the bases, so 3x = (4x + 12) / 2
6x = 4x + 12
2x = 12
x = 6
Hence the middle line = 3x = 3 * 6 = 18 cm
Answer: 18 cm
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