Marco built a circular table that has a radius of 3 centimeters. what is the diameter of the table ?
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.
Answer:
3^2 + x^2 = 9^2
9 + x^2 = 81
x^2 = 72
x = , which is about 8.5
Cosine X = 3/9
Cosine X = 1/3
angle x= 70.5
If angle x= 70.5, angle z = 19.5 degrees.
Let me know if this helps!