Answer:
80 square centimeters
Step-by-step explanation:
see the attached figure to better understand the problem
we know that
The total area of the arrow is equal to the area of a rectangle plus the area of a triangle
step 1
Find out the area of the rectangle
The area of rectangle is equal to
[tex]A_1=LW[/tex]
we have
[tex]L=17\ cm\\W=4\ cm[/tex]
substitute
[tex]A_1=(17)(4)=68\ cm^2[/tex]
step 2
Find the area of triangle
The area of triangle is equal to
[tex]A_2=\frac{1}{2}(b)(h)[/tex]
we have
[tex]b=4+2+2=8\ cm\\W=20-17=3\ cm[/tex]
substitute
[tex]A_2=\frac{1}{2}(8)(3)=12\ cm^2[/tex]
step 3
The area of the arrow is equal to
[tex]A=A_1+A_2[/tex]
substitute the values
[tex]A=68+12=80\ cm^2[/tex]
