Find the 12th term of the geometric sequence 9, 27, 81...
1 answer:
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Given:
- Height of cylinder is 18.2 cm
- Radius of cylinder is 3 cm
To Find?
- Surface area
Solution:
Using formula:
- Surface area of cylinder = 2πr (h + r)
Substituting values in the formula:
- Hence, (B) 399.4 cm² is right answer.
We're dividing fractions, so we will flip the one in the denominator upside down and we will multiply it with the numerator.
Let's equal this too 8/x
Cross multiply.
Divide both sides by 15.