Answer:
x=7
Step-by-step explanation:
14/28=x/14
x=7
Answer:
10178.76
Step-by-step explanation:
use formula:-2πrh+2πr^2
You can use a tangent:

We have opposite = 17 and adjacent = x.

substitute:
cross multiply
multiply both sides by √3

divide both sides by 3

Use the Pythagorean theorem:

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Other method.
triangle.
The sides are in the ratio 
Therefore

Answer:
Step-by-step explanation

⇒ 80 + ( 2 * 0.01 ) + ( 9 * 0.001 )
⇒ 80 + 0.02 + 0.009
= 80.029
Answer:y = 9x
Step-by-step explanation: