A = 54 um²
Hi there !
we have 3 triangles and a rectangle
A = A₁ + A₂ + A₃ + A₄
A(triangle) = bₓh/2
b = base ; h = height
A(rectangle) = l ₓ w
l = length ; w = width
= (3ₓ2)/2 + (6ₓ1)/2 + (6ₓ2)/2 + (7ₓ6)
= 6/2 + 6/2 + 12/2 + 42
= 3 + 3 + 6 + 42
= 54 um²
Good luck !
