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serious [3.7K]
2 years ago
9

PLEASE HELP WILL MARK BRAINLIESTonly number 8

Mathematics
2 answers:
erastova [34]2 years ago
8 0

Answer:

a=646.84   c=113.04

Step-by-step explanation:

olasank [31]2 years ago
3 0
Answer:
Area is = to 1017.88
Circumference is = to 113.1
Step-by-step explanation:
To find the area of a circle use the formula A=πr2
So . . .
A = π18²
A = π324
A = 1017.88
To find the circumfrence of a circle use formula C=2πr
So . . .
C = 2π18
C= 113.1
Hope this helps
Brainliest please!
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