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Question:

The area of the trapezium is 34 sq cm and the length of one of the parallel sides is 10 cm and its height is 4 cm. Find the length of the other parallel side.

Solution:

Area of Trapezium=1/2 × Sum of Parallel Sides × Distance between parallel sides
→34=1/2 ×(10+x) ×4
→x=7
Length of other parallel side of trapezium is 7cm