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Big Ideas Math Geometry, 2014
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Big Ideas Math Geometry, 2014 View details
2. Areas of Circles and Sectors
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Exercise 1 Page 602

The area of a circle with radius r is calculated using the formula below. A=π r^2 We know that the radius of the circle is 4.5 meters. By substituting 4.5 for r in the formula, we can calculate A.
A=π r^2
Substitute

r= 4.5

A=π( 4.5)^2
CalcPow

Calculate power

A=π * 20.25
UseCalc

Use a calculator

A=63.617251 ...
RoundDec

Round to 2 decimal place(s)

A≈ 63.62
The area of the circle is approximately 63.62m^2.
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arrow_right Communicate Your Answer p.601
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arrow_right Monitoring Progress p.602-605
Monitoring Progress 1 (Page 602)
Monitoring Progress 2 (Page 602)
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arrow_right Exercises p.606-608
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Exercises 3 (Page 606)
Exercises 4 (Page 606)
Exercises 5 (Page 606)
Exercises 6 (Page 606)
Exercises 7 (Page 606)
Exercises 8 (Page 606)
Exercises 9 (Page 606)
Exercises 10 (Page 606)
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Exercises 33 (Page 607)
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Exercises 35 (Page 608)
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Exercises 37 (Page 608)
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Exercises 39 (Page 608)
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Exercises 41 (Page 608)
Exercises 42 (Page 608)
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Exercises 44 (Page 608)
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