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PolarNik [594]
4 years ago
11

Write each fraction or mixed number as a decimal 7/20

Mathematics
1 answer:
horsena [70]4 years ago
7 0

Answer:

\large\boxed{\dfrac{7}{20}=0.35}

Step-by-step explanation:

\bold{METHOD\ 1}\\\\\dfrac{7}{20}=7:20=0.35\\\\\text{Use a calculator or long division}\\\\.\qquad\underline{0.35}\\.\ \ 20|7\\.\ \ \ \ \ \underline{\ 0}\\.\qquad70\\.\ \ \ \ \ \underline{\ 60}\\.\qquad100\\.\qquad\underline{100}\\.\qquad==

\bold{METHOD\ 2}\\\\\dfrac{7}{20}=\dfrac{7\cdot5}{20\cdot5}=\dfrac{35}{100}=0.35

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Answer:

The area of the shaded region is 7π square centimeters.

Step-by-step explanation:

Note that Circle B has a radius of 3 cm, and the two smaller circles, Circles O and C, both have a radius of 1 cm.

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\displaystyle A = \pi r^2

Therefore, the area of Circle B, the entire circle, is:

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And likewise, the area of Circle C is:

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The area of the shaded area is the area of the Circle B subtracted by the area of Circles O and C. Hence:

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3 years ago
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