Answer:
27m²
Step-by-step explanation:
surface area is area of all sides
these is two triangles and a rectangle
area of triangle = (base x height) /2 = (3 x 4)/2= 12/2 =6
area of rectangle = length x breadth = 5x3 = 15
surface area = area of triangle + area of triangle + area of rectangle
6 + 6 + 15 = 27m²
