Answer:
r = 3.2
Step-by-step explanation:
If A varies inversely with the square of r, then A = kr^2
75 = k*4^2 = 16k
k = 75/16
Now A = (75/16)*r^2
48 = (75/16)*r^2
r^2 = 48(16/75) = 256/25
r = = 16/5 = 3.2
Answer:
You could approximate pi to be 3.14, and divide that by 6.
Step-by-step explanation:
Answer:
35:14
Step-by-step explanation:
The ratio is 5:2.
The smaller number is 14, which replaces the 2. First, find the factor you used to get to 14. To do so, divide 14 by the smaller ratio number, 2:
14/2 = 7
Now, multiply 7 to the other side of the ratio:
5 x 7 = 35
If 5:2 ∴ 35:14
35:14 is your ratio.
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The answer i'm pretty sure should be C.