I'm pretty sure its length x height so the answer is 18.75.
Answer:
12.5
Step-by-step explanation:
Area of Trapezium = 1/2 ( A + B ) × H
A = 2.5
B = 7.5
H = 2.5
1/2 ( 2.5 + 7.5 ) × 2.5=
1/2 ( 10 ) × 2.5=
5 × 2.5 = 12.5
