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Answer:
a = 4
Step-by-step explanation:
2a + 7 = 15
- 7 - 7
2a = 8
/2 /2
a = 4
Hope this helps!
Answer:
37.69
Step-by-step explanation:
Since the diameter is 12, the Radius is 6
Circumference equation: 2pi(r)
So we plug it in
2pi(6)
That gives us 37.699
If you need to round, then it would be 37.7.
I really hope this helps!!!
Answer:
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Step-by-step explanation: how do expect us to know this