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21.
Referring to the figure, the circle shown is drawn on grids. Find
A ÷ r and A ÷ r2.
a. 7.1, 3 c. 16, 4
b. 14.2, 3.2 d. 12, 2.7

21 Referring to the figure the circle shown is drawn on grids Find A r and A r2 a 71 3 c 16 4 b 142 32 d 12 27 class=

Respuesta :

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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

Answer:

b

Step-by-step explanation:

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