Answer:
72 cm²
Explanation:
The area (A) of a trapezium is calculated as
A = h (a + b)
where h is the perpendicular height and a, b the parallel bases
Here h = 6 , a = 15, b = 9 , thus
A = × 6 × (15 + 9) = 3 × 24 = 72 cm²
= 72 cm²
A = (b + B)×h/2
= (9cm + 15cm)×6cm/2
= 24cm×3cm
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h (a + b) × 6 × (15 + 9) = 3 × 24 = 72 cm²