Answer:
The diameter is 47
Step-by-step explanation:
Given
--- Circumference

Required
Determine the diameter (d)
The circumference of a circle is:

Make d the subject



The answer is D: to dilate the triangle by a scale factor of 1:2 (or 1/2).
I hope this Helps!
Answer:
$9.10
Step-by-step explanation:

455 ÷ 50 = 9.1. The student tickets cost $9.10. (I think)
A20-a18=a1+19d-a1-17d=2d =281-97
so
d=92