A quarter has a diameter of approximately 24 millimeters. What is the area of the quarter?
Did I work this right?
A= 3.14 (12)
A=3.14 (144)
A-452.16 mm
Thanks
Right -- but be sure you say mm squared.
A quarter has a diameter of approximately 24 millimeters. What is the approximate area of the quarter?
To find the area of a quarter, you need to use the formula for the area of a circle, which is A = πr^2.
However, you mentioned that the diameter of the quarter is 24 millimeters. In order to find the radius (r), you need to divide the diameter by 2. So, r = 24 mm divided by 2, which is equal to 12 mm.
Now that you have the radius, you can calculate the area using the formula A = πr^2. Plugging in the value for the radius, the calculation becomes:
A = 3.14 * (12)^2
A = 3.14 * 144
A = 452.16 square millimeters
Therefore, the correct answer is A = 452.16 square millimeters, not A = 3.14 * 144.
So no, your calculation was not correct.