Answer:
20.7
Step-by-step explanation:
f=u+2
math
42 square meters
rectangle: 3 x 6= 18 square meters
square: 4 x 5= 20 square meters
triangle: 4 x 2 x 1/2= 4 square meters
18 + 20 + 4= 42 square meters
5)14x+4
6)20x
5)8x+6x+4
6) 5x×4