Answer:
option d.28.8 cm^2
Step-by-step explanation:
Area of shaded region=1/2bh
=1/2×12.8×4.5
=28.8
d 28.8cm2
1/2BH
1/2() 12.8() 4.5
28.8
it 28 by adding 6 +1 is 7 and times it by 4