area of trapezium is 144.5 sq.cm. and its height is 8.5 cm long .if one of the parallel sides is 20.4 cm long. what is the length of the other side
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Answer:
13.6 cm
Step-by-step explanation:
Area of trapezoid = 1/2 (sum of parallel sides) × h
144.5 × 2 = (20.4 + 2nd side)× 8.5
289÷8.5 = 20.4 + 2nd side
34-20.4 = 2nd side
2nd side = 13.6
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