Question

A penny is 19 mm wide. What is the area of the front side of the penny? Use 3.14 for π. Round to the nearest hundredth if necessary.

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Answer 1

≈283,39 mm^2

Explanation:

The diameter is 19 mm, so the radius is half diameter (9,5 mm)

`a = \pi * {r}^(2) = 3.14 * {9.5}^(2) = 3.14 * 90.25 ≈ 283.39`

Answer 2

The required area of the penny is given as 283.385 square millimeters.
Given that,
A penny is 19 millimeters wide. The area of the face of the coin? Round to the nearest hundredth is ot be determined and π = 3.14
What is an area circle?
The area of the circle is given by the pie times square of the radius.
Area of circle = πr^2
here,
Area of the penny = π[d / 2]²
Substitute the values in the above equation,
Area of the penny = 3.14 [19 / 2]²
Area of the penny = 283.385
Thus, the required area of the penny is given as 283.385 square millimeters.