Answer:
8.3 in²
Step-by-step explanation:
We have
three triangles with the base b = 2 in. and the height h₁ = 2.2 in.
one triangle with the base b = 2 in. and the height h₂ = 1.7 in.
The formula of an area of a triangle:
[tex]A=\dfrac{b\cdot h}{2}[/tex]
b - base
h - height
Substitute:
[tex]A_1=\dfrac{(2)(2.2)}{2}=\dfrac{4.4}{2}=2.2\ in^2[/tex]
[tex]A_2=\dfrac{(2)(1.7)}{2}=1.7\ in^2[/tex]
[tex]S.A.=3A_1+A_2[/tex]
[tex]S.A.=3(2.2)+1.7=6.6+1.7=8.3\ in^2[/tex]
