Answer:
r ≈ 22.44 ft
Step-by-step explanation:
The circumference (C) of a circle is calculated as
C = 2πr ( r is the radius ), then
141 = 2πr ( divide both sides by 2π )
= r , that is
r ≈ 22.44 ft ( to the nearest hundredth )
plug it in
circumference = 2 x Pi x r
141 = 2 x 3.14 x r
141 = 6.28 x r
141 ÷ 6.28 = r
22.45 = r
Answer: 1/2
Step-by-step explanation: 4/8 =1/2
The scale factor is six and the dilation is an enlargement.
do it yourself
On a unit circle, , so in this case. If you look at the attached circle, the only time that the y-coordinate is is when and , which correspond to angles of and respectively