Answer:
It’s triangular prism
Step-by-step explanation:
y=3x-2
124°
cos X = (11²+7²-16²)/2(11)(7)
= (121+49-256)/154
= -86/154
= -0.5584
X = cos~¹ -0.5584 = 124°
1. 615.75
2. 9