# geometry

posted by ken

What is the area of a sector with a central angle of 210 degrees and a diameter of 4.6 m?

1. plumpycat

Area = pi*(2.3)^2*(210/360)

2. Bosnian

If your quesions refers to circle then:

Area of a circle:

A = r ^ 2 * π

210 ° / 360 ° = 2 * 3 * 5 * 7 / 2 ^ 3 * 3 ^ 2 * 5 =

7 / 2 ^ 2 * 3 =

7 / 4 * 3 = 7 / 12

A(210°) = r ^ 2 ∙ π * 7 / 12

A(210°) = 7 * r ^ 2 ∙ π / 12

3. Bosnian

r = d / 2

r = 4.6 / 2

r = 2.3 m

r ^ 2 = 2.3 ^ 2

r ^ 2 = 5.29

A(210°) = 7 * r ^ 2 ∙ π / 12

A(210°) = 7 * 5.29 ∙ π / 12

A(210°) = 37.03 ∙ π / 12

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