Answer:
3.16227766017
Step-by-step explanation:
ANSWER

and

EXPLANATION
Since corresponding angles are equal,

Alternate angles are also equal, therefore,

Equation (2) minus equation (1) gives,


We put
in to equation (1)



Answer:
a) 8
b) 12
Step-by-step explanation:
With orange: 2×2×2 = 8
With yellow: 2×2 = 4
Total = 8+4 = 12