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20 March, 11:57

A circular piece of glass has a radius of 0.8 meters. The glass sells for $4.60 per square meter. What is the total cost of the circular piece of glass?

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Answers (2)
  1. 20 March, 12:02
    0
    Given radius of circle = 0.8 meters

    Area of circle = pi * r*r

    Area = 3.14 * 0.8 * 0.8 = 2.0096 meter square

    Cost of one square meter of glass = $4.60

    cost of 2.0096 square meter of glass = 4.60*2.0096 = 9.24416

    Cost of glass = $9.24416
  2. 20 March, 12:05
    0
    Here given that r = 0.8

    Area of circular glass = area of circle = pi r^2

    = 3.14 (0.8) ^2 = 2.009 square meter

    cost of one square meter = 4.60

    cost of 2.009 square meter = 4.60 * 2.009 = 9.244

    Answer $ 9.244.
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