If this is supposed to be

Then this can simply be reduced to

by the double angle formula for cosine
Answer:
D. 314 yds
Step-by-step explanation:
Given:
Diameter = 100 yds
Required;
Circumference of the circle
Solution:
Circumference of circle = πd
Plug in the value
Circumference = π × 100
= 314 yds (nearest whole number)
Answer:
If she doubles it then it will be 4: 10
If she triples it then it'll be 6: 15
Hope that helps!
Answer:
I just looked it up, apparently this is how. I've never cancelled a Brainly subscription before, but hopefully this helps.
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3. Select Subscription
4. Select Cancel subscription
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