Answer:
A = 60 cm²
Explanation:
the figure is composed of a rectangle ( lower ) and a triangle (upper)
calculate the area of both and sum them
the area of a rectangle is calculated as
area = length × width
here length = 9 cm and width = 4 cm
area = 9 × 4 = 36 cm²
the area of a triangle is calculated as
area =
bh ( b is the base and h the perpendicular height )
here b = 4 cm and h = 12 cm
area =
× 4 × 12 = 2 × 12 = 24 cm²
total area = 36 + 24 = 60 cm²