A dime has a diameter of 17.91 millimeters. What is the area of the face of a dime? Use 3.14 for π. Round to the nearest hundredth if necessary.
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Given : A dime has a diameter of 17.91 millimeters.
Use 3.14 for π.
To Find : the area of the face of a dime
Round to the nearest hundredth if necessary.
Solution:
area of the face of a dime = π ( radius)²
π = 3.14
radius = Diameter/2
=> radius = 17.91/2
=> radius = 8.955 mm
area of the face of a dime = 3.14 ( 8.955)²
= 251.803
= 251.8 mm²
area of the face of a dime = 251.8 mm²
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