Answer:
24 mm
Step-by-step explanation:
split up parallelogram into 3 shapes, 2 triangles and a rectangle
triangles are special triangles with 3:4:5 ratio
so
A= 1/2 * 4 * 3= 6 for each triangle
rectangle Area
l * w
3 * 4 is 12
add all areas
12 + 6 + 6 = 24
