A graphic artist is designing a company logo with two concentric circles (two circles that share the
same center but have different radii). The artist
needs to know the area of the shaded band
between the two concentric circles. Explain to the
artist how he would go about finding the area of
the shaded region.

Step-by-step explanation:

Radius of outer circle = R = 9 cm

Radius of inner circle = r = 5 cm

Area of the shaded region = area of the outer circle - area of the inner circle.

                                            = πR² - πr²

                                            = π(R² - r²) = 3.14*(9² - 5²)

                                             = 3.14 * (81- 25) = 3.14 * 56

                                              = 175.84 cm²

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2

22.83 repeating

step-by-step explanation:

137 ÷ 6 is 22.8333333 therefore we understand that 3 is repeating.

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