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igor_vitrenko [27]
3 years ago
8

Find the area of the shaded region.

Mathematics
1 answer:
Citrus2011 [14]3 years ago
3 0

Answer:

pi × 18cm^2

Or approximately,

56.52cm^2 (using 3.14 for pi)

or

56.5487cm^2 (using pi button on calculator)

Step-by-step explanation:

Area of a circle is pi times [radius squared].

All circles are 360°.

Problem can be solved by finding area of whole circle, and then using ratios.

Whole Circle: area = pi × (9cm)^2 = pi × 81cm^2

80° / 360° = Area[shaded] / (pi × 81cm^2)

pi × 18cm^2 = Area[shaded]

((If you read my answer before the edit, I am sorry. I made a calculator error.))

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Two sides of a triangle are equal in length and double the length of the shortest side. The perimeter of the triangle is 36 inch
chubhunter [2.5K]

Answer:

Two equal sides = 14.4 inches each

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Step-by-step explanation:

a + b + c = 36

a = b

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then:

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a = 14.4

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Check:

14.4 + 14.4 + 7.2 = 36

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3 years ago
Mr berry has $500 in a savings account at the beginning of the summer. He wants to have at least $200 in the account by the end
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3 years ago
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3 years ago
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Schach [20]

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Factor this. GCF=2

2(2cos2x+cos x-1)=0

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<u><em></em></u>

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3 years ago
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