Simplify to create a equivalent expression.
2 answers:
Answer:

Explanation:
Expand 
= 
Expand 
= 
Simplify 
= 
Mordancy.
Answer:
66k + 9
Step-by-step explanation:
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The surface area is 253.5 but Im not sure
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Answer:
178.3 mm²
Explanation:
The surface area of the regular pyramid is equal to the sum of the base and lateral areas:()