Answer:
67.2 square units
Step-by-step explanation:
You want the area of rhombus STUV with diagonal lengths SU=8.2 and TV=16.4.
The area of a rhombus is half the product of the lengths of the diagonals:
A = 1/2(d1)(d2)
A = 1/2(8.2)(16.4) = 67.24
The area of the rhombus is about 67.2 square units.