Answer:
E = 0 x (4/6) + 60 x (1/6) + 120 x (1/6) = 30
Step-by-step explanation:
Answer:

Step-by-step explanation:
we know that
The surface area of the cone is given by the formula

where
r is the radius of the base
l is the slant height
we have

substitute


She will need 12 seconds because -20•12=-240
90 degrees you are looking to your side
180 degrees you are looking behind you
around origin of 0,0
the image is flipped into the negative world if it is in posiitve or vice versa