Hmmmm
the 1 in 435.15 is worth 0.1 or 1/10
1/10 of 1/10 is 1/10 times 1/10 or 1/100 or 0.1/10 or 0.01/1 or 0.01
so we want one with the 1 that is 2 spaces to the right of the decimal
that is choice H
remember, when you divide by 10, move the decimal to the left 1 space
H is the answer
Lets assume center point of circle as O
OD is the radius of circle . so OD is also 7
All the sides of the triangle are equal . so angle at the center O is 60 degree.
radius = 7
Length of arc CD = 
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You go on there profile and go to the followers and add whoever you want
Hope this helps
Have a great day/night
