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Determine the value of $h$.
Mathematics 4024 · O Level · Area and perimeter
Area and perimeter — practice question
The diagram represents trapezium $ABCD$. The lengths $AB = 7\text{ cm}$ and $DC = 10\text{ cm}$ are given. The area of $ABCD$ is $85\text{ cm}^2$. The perpendicular height of the trapezium is $h\text{ cm}$.