Answer:
5.78
Step-by-step explanation:
S=[tex]\frac{1}{2}[/tex](a+b)*h
a = 1.8
b = 5
h = 1.7
S = [tex]\frac{1}{2}[/tex](1.8+5)*1.7
S = (6.8*1.7)/2
S = 11.56/2
S = 5.78
