human
Calculate the area of a trapezium where the dimensions are given in the same units When calculating the area of this trapezium, what are the values of \( a \) and \( b \) in the formula? ![Diagram of a trapezium with its 2 parallel sides horizontal. The parallel sides are labelled as 9cm and 10cm. The lengths of the 2 non-parallel sides are labelled as 7cm and 7.5cm. The perpendicular height is labelled as 6cm.]() Area \( =\left(\frac{a+b}{2}\right) h \) \( 7+7.5 \)
gpt
Uses slant heights instead of parallel sides to find area of a trapezium