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LenKa [72]
3 years ago
5

What is the ratio of the sector area to the area of the entire circle?

Mathematics
2 answers:
inna [77]3 years ago
4 0

Answer:

One fourth

Step-by-step explanation:

\frac{area \: of \: sector}{area \: of \: circle}  =  \frac{ \frac{ 90 \degree}{360 \degree  } \times \pi {r}^{2}}{ \pi {r}^{2}}  \\  =  \frac{ \frac{1}{4}  \times 1}{1}  \\  =  \frac{1}{4}  \\  = 1 : 4

ElenaW [278]3 years ago
3 0

Answer:

1/5

Step-by-step explanation:

the angle is 72 degrees, ratio is 72:360, simplified is 1/5

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