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taurus [48]
3 years ago
6

The circumference of a circle is 25.12cm. What is the area of the circle? Use 3.14

Mathematics
1 answer:
malfutka [58]3 years ago
3 0
C=2pir
area=pir^2

given
c=25.12
25.12=2pir
pi=3.14
25.12=2(3.14)r
25.12=6.28r
divide both sides by 6.25
4=r

sub into other
area=pir^2
area=pi4^2
area=16pi
area=16(3.14)
area=50.24

the area is 50.24 square cm
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Answer:

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3 years ago
64=(x+8)+90<br><br>what does x equal
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Solution, solve\:for\:x,\:64=\left(x+8\right)+90\quad :\quad x=-34

Steps:

64=\left(x+8\right)+90

\mathrm{Switch\:sides}, \left(x+8\right)+90=64

\mathrm{Remove\:parentheses}:\quad \left(a\right)=a, x+8+90=64

\mathrm{Add\:the\:numbers:}\:8+90=98, x+98=64

\mathrm{Subtract\:}98\mathrm{\:from\:both\:sides}, x+98-98=64-98

\mathrm{Simplify}, x=-34

\mathrm{The\:Correct\:Answer\:is\:x=-34}

\mathrm{Hope\:This\:Helps!!!}

4 0
2 years ago
Please help me will mark as brainlist
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Answer:

17.3825

Step-by-step explanation:

First I figured out the area of the square which is 18×18=324

Then I found out the are of the circle which is 254.47, so 324 - 254.47 = 69.53

Then there are 4 times the shaded are so divided by 4, so 69.53  ÷ 4 = 17.3825

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3 years ago
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