If the CPI for 1989 was 124, the rate of the inflation between the base period and 1989 was 24%!
Use the proportion equation. Cross multiply. Answer is 10.4%
Answer:
The surface area is 
Step-by-step explanation:
see the attached figure to better understand the problem
we know that
The surface area of a triangular prism is equal to

where
B is the area of the triangular base
P is the perimeter of the triangular face
H is the height of the prism
<em>Find the area of the base B</em>

<em>Find the perimeter of the base P</em>

we have

substitute the values
The surface area is

Answer:
Step-by-step explanation:
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