Ex 9.1, 2 The area of a trapezium is 34 cm2 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.Given,
Area of Trapezium = 34 cm2
Length of one Parallel side = a = 10 cm
Height = h = 4 cm
Let the length of other Parallel side = b cm
Now,
Area of trapezium = 1/2 (a + b) × h
34 = 𝟏/𝟐 (10 + b) × 4
34 = (10 + b) × 2
34 = 20 + 2b
34 − 20 = 2b
14 = 2b
14/2 = b
7 = b
b = 7
∴ Length of other Parallel side = 7 cm

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.

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