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Mumz [18]
3 years ago
15

Find area of a circle whose diameter 21cm

Mathematics
1 answer:
mel-nik [20]3 years ago
5 0

Answer:

346.36 cm ^2

Step-by-step explanation:

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I thought this would be easy lol, I tried, sorry for not getting an answer
3 0
3 years ago
Simplify each radical
const2013 [10]

Answer:

AECG

Step-by-step explanation:

1

sqrt(49) = 7

sqrt(a^2) = a

sqrt(b^2) = b

For every two variables you can take one out from under the root sign and thorough the other one away.

Answer: E

2

sqrt(36) = 6

sqrt(a^2) = a  See comment for 1.

b must be left where it is. There is only 1 of them.

6asqrt(b)

Answer: A

3. sqrt(25) = 5

sqrt(b^2) = b

a must be left alone.  There's only 1 of them.

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answer: C

4

sqrt(81 a b)

sqrt(81) = 9

The variables must be left alone. There's only1 of them

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Answer G

8 0
2 years ago
Here all me points i have 0 now
marin [14]

Answer:

thanks

Step-by-step explanation:


4 0
3 years ago
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