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17.91*21=376.11
i used one side of the triangle because both sides are equal
Answer:
The 3rd term is

Step-by-step explanation:
From the given information, the first term of the sequence is

The common ratio of the sequence is

The explicit formula for a geometric sequence is :

To find the third term, we put n=3 to get:

This simplifies to:

Step-by-step explanation:
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