hola!
I have divided the following figure into two rectangular shapes.
[ refer the attachment. ]
We know,
Area of rectangle = length × width
For first rectangle:
→ length = 8 in.
→ width = 6 in.
Thus,
Area = 8 in. × 6 in. = 48 in² ----(i)
For second rectangle:
→ length = 10 in.
→ width = 3 in.
Thus,
Area = 10 in. × 3 in. = 30 in² ----(ii)
Combining the results got from (i) and (ii)
Area of complete figure = 48 in² + 30 in² = 78 in²
hope it helps!