Given
Find
Area of the table.
Step-by-step explanation
Area of trapezium is given by

we have given
table width = 2.5 yd
longest side is twice the table's width
so , longest side = 2 *2.5 = 5 yd
side opposite to longest side = 5 - 2 = 3 yd
area of the table =

Final Answer
a) bottom box = 5 yd and top box = 3 yd
b) area of the table = 10 square yards