Answer:
I don't see anything, but I can help you what is it about? If its science. I'm bad at science. If its math I can try to help you.
Step-by-step explanation:
Use Pythagorean Theorem:
a² + b² = c²
"a" is one side of the right triangle.
Its length is: radius of larger circle minus radius of smaller circle: (11 - 3 = 8)
The distance between the center of the circles creates the hypotenuse (17)
8² + b² = 17²
b² = 225
b = 15
Answer: the length of the common external tangent is 15.
11 is the answer.
10+10=20
20-9=11
11+9=20
11
1/25 of a minute is 2,4 secs.
1/5 = 2,4s
5/5 = 12 secs
