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scoray [572]
3 years ago
9

D/12 = 0.25 bbhhgshdhrjrhfbbdb

Mathematics
1 answer:
marta [7]3 years ago
4 0
So solve for the placeholder D
D/12=0.25
multiply both sides by 12 to clear fraction
12D/12=0.25 times 12
D(12/12)=3
D(1)=3
D=3


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Help with the following problem please
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Given:
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=> the small shaded circles have a radius of r=x/5

By adding up radii, we have the equation
2(r+x+r)=2(x/5+x+x/5)=2R=2*7=14
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=> r=1

Area of outer circle                  = \pi R^2=\pi7^2=49\pi
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