Last year, 75 new houses were built in a neighborhood. So far this year, 4/5 of them have been sold. How many new houses have be
2 answers:
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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.