I will first redraw the shape
The shape has been divided into 3 part A, B, and C
Each shape forms a rectangle, we will find the area of this rectangle independently, then add them together to give us the area of the shape.
Area of A = l x w
From the fighure l = 5 and w = 1
A = 5 x 1 = 5m²
Area of B = l x w
l=6 and w= 1
Area of B = 6 x 1 = 6m²
Area of C = l x w
l= 3 and w =4
Area of C = 3 x 4 = 12m²
Area = area of A + area of B + area of C
= 5m² + 6m² + 12m²
=23m²