A ferris wheel has a circumference of 119.32 yds. a) What is the diameter of this ferris wheel? and b) What is the radius of this ferris wheel? (use 3.14 for pi)

a) 38

b) 19

Step-by-step explanation:

2πr = 119.32

2(3.14)r = 119.32

6.28r = 119.32

r = 119.32 / 6.28

r = 19

diameter = 2r = 2(19) = 38

stop using this to cheat on home work

step-by-step explanation:

dfbvfvdf

the value of v.w= -12.

step-by-step explanation:

we are given three vector r,v and w as:

r = < 5, -5, -2> ; v = < 2, -8, -8> ; w = < -2, 6, -5>

we know that r,v and w could also be represented as:

r=5i-5j-2k

v=2i-8j-8k

and w= -2i+6j-5k

where i,j and k are the unit vectors of x,y and z-axis respectively.

also we know that it has the following property:

i.i=1 ; j.j=1; k.k=1

and i.=j.i=i.k=k.i=j.k=k.j=0

i.e. when we multiply two vectors or we find it's dot product we need to only multiply the components of x coordinates with each other; y with each other and z with each other.

hence, v.w= (2i-8j- -2i+6j-5k)

                  = 2×(-2)+(-8)×(6)+(-8)×(-5)

                  = -4-48+40

                  = -12

hence, v.w= -12