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Alexeev081 [22]
3 years ago
12

Circumference help what is the approximately circumference of the circle

Mathematics
1 answer:
andrew-mc [135]3 years ago
4 0
I think it is c hope it helps
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A circle's radius is increased by 10%. By what percentage does its area increase
Vladimir79 [104]
Answer: 21%

Explanation: Let the radius of the circle =R therefore area of the circle = [pi][R * R]
Radius of the circle after 10% increase =R+10% of R=R+R/10=11R/10
Therefore AREA of the circle with radius 11R/10 =[pi][11R/10*11R/10]=[pi][121R*R/100] Hence INCREASE in the AREA of the circle=[pi][121R*R/100]-[pi][R*R] =[pi] [R*R][121/100-1] =[pi][R*R][121-100]/100=[pi][R*R][21]/100 THEREFORE % increase in the area of the circle=[pi][R*R][21/100]/[pi][R*R] whole multiplied by 100=21 HENCE increase in the area of the circle =21% NOTE : pi is a constant whose value=22/7
4 0
3 years ago
The reciprocal of -21
Alex_Xolod [135]
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21

(Minus one over 21)
8 0
3 years ago
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Kylie recorded the number of squats she could do on each day of her training.
valina [46]

Answer:

your answer will be B)Yes. Each input (day) has exactly one output (number of squats).

Step-by-step explanation:

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3 0
3 years ago
Edward owes his parents $20 for a new video
Galina-37 [17]

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it would take Edward 8 to pay back his debt

Step-by-step explanation:

every 2 days he pays his parents 5 bucks so because 5 times 4 equals 20 he would have to multiply the 4 by 2 and that gets you 8 days

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Which rule explains why these scalene triangles are similar?
Mashutka [201]

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D.  none of the above

Step-by-step explanation:

no side lengths given

no angles are the same in both triangles

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2 years ago
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