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 Class 7 Mathematics Length, Perimeter and Area: Length and its Operations

The area of the trapezium EFGH below is 3000#cm^2#. The length of EH is 80 cm and that of FG is 120 cm. EH is parallel to FG and HG is perpendicular to EH and FG. What is the length of GH?
A. 50 cm
B. 30 cm
C. 25 cm
D. 15 cm

 (2m 36s)
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