Answer:
84 square units
Explanation:
Triangles DUM and DAP are similar, so their corresponding dimensions are proportional.
UM/AP = MD/PD
UM/4.5 = 10/3.75
UM = (4.5)(10)/3.75 = 12
The area of triangle DUO is ...
A = 1/2bh
A = 1/2(DO)(UM) = 1/2(14)(12) = 84 . . . square units
The area of triangle DUO is 84 square units.