Answer:
A) 3 sq cm
Step-by-step explanation:
Look at the picture.
The formula of an area of a rectangle:
A = wl
w - width, l - length
We have two rectangles:
Rectangle 1:
1cm × 2cm
A₁ = 1cm × 2cm = 2cm²
Rectangle 2 (square):
1cm × 1cm
A₂ = 1cm × 1cm = 1cm²
The area of a shape:
A = A₁ + A₂ → A = 2cm² + 1cm² = 3cm²
