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marissa [1.9K]
1 year ago
14

21.

Mathematics
2 answers:
murzikaleks [220]1 year ago
4 0

Answer:

B.  14.2, 3.2

Step-by-step explanation:

diameter: 9 (count each box as 1)

d/2 = radius  --> radius: 4.5

Area of a circle= πr^2

A= 63.6172

A/r = 63.6172/4.5 = 14.1

A/r^2= 63.6172/(4.5)^2 = 3.14

postnew [5]1 year ago
3 0

Answer:

b

Step-by-step explanation:

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3 years ago
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Sauron [17]

Answer:

85°

Step-by-step explanation:

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