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    4. A7 inch diameter steel plate has had a 3 inch square cut out of the center Calculate the remaing surface area
    A7 inch diameter steel plate has had a 3 inch square cut out of the center Calculate the remaing surface area

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    0  Views: 658 Answers: 1 Posted: 11 years ago
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      1 Answer

      Area of a circle:  A = PI X Radius squared
      A = PI (3.14) x (3.5)(3.5)   ( Radius is 1/2 diameter.  1/2 of 7 = 3.5)
      A = 3.14 x 12.25
      A = 38.465 square inches
      Remove a 3 inch square ( 3 x 3 = 9 square inches)
      38.465 - 9 = 29.465 remaining square inches 

      11 years ago. Rating: 1
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