Find the area of the figure. 13 m 6 m 8 mm 4 m

Find area  of rectangle
find are a of triangle
rectanglearea-trialgnearea=areaofshadedreigon

rectanglearea=legnth times wdith
trianglearea=1/2 times base tiems height

rectangle is 13 by 8
area=13*8=104

trialgle area=
we need to find base
13-4-4=5
base=5
height=6
area=1/2 times 5 times 6=15

rectangle-traingle=104-15=89 m^2

The answer is 41.7 because 1.39 times 30 is 41.7