Answer:
Explanation:
You are told that the diameter of a penny is 3/4 of an inch. The decimal equivalent is 0.75 inches.
r = d/2
r = 0.75/2 = 0.375 inches.
Area = pi r^2
pi = 22/7
r = 0.375
Area = 22/7 * 0.375^2
Area = 22 * 0.375^2/7
Area = 3.094 / 7
Area = 0.44196
If you retain this in fractions then the answer is 99/224
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Area = 22 / 7 * 3/8 * 3/8
Area = 22/7 * 9/64
Area = 198 / 448 Both can be divided by 2
Area = 99 / 224
I did it the top way because I think it is the most common way to solve this question. Your teacher may not agree, but you should see both ways.
Area = 3.094 square inches.
Fraction = 3.