A dime has a diameter of 17.91 millimeters. What is the area of the face of a dime? Use 3.14 for ππ. Round to the nearest hundredth if necessary.
+7
D/2=R
17.91/2=8.955
A=πr2
251.8029585=3.14*(8.955*2)
Answer:251.8 in^2 ( rounded to the nearest hundred
What I did:
Since you only gave the diameter of 17.91 I had to divide the diameter by 2 which gave me 8.955 (the radius). Then to get the area I had to first multiply 8.955 (the radius) by itself which gave me 80.192025. Then I had to take 80.192025 and multiply it by 3.14 (π) which gave me 251.8029585 in^2.
Shown in equation form:
17.91/2=8.955
8.955^2=80.192025
80.192025*3.14=251.8029585 in^2
