19 mm. Find the area of the coin to the nearest tenth. Use 3.14 for it.
Area of circle = π r^2
you have both numbers
To find the area of the coin, we need to use the formula for the area of a circle:
A = πr^2
Where A is the area and r is the radius of the circle. The radius is given as 19 mm.
Let's calculate the area step-by-step:
Step 1: Square the radius
r^2 = 19^2 = 361
Step 2: Multiply the squared radius by π
A = 361 * 3.14
Step 3: Calculate the final result
A ≈ 1134.54
Therefore, the area of the coin is approximately 1134.54 square millimeters, rounded to the nearest tenth.
To find the area of a coin, we need to use the formula for the area of a circle. The formula for the area of a circle is A = πr^2, where A represents the area and r represents the radius of the circle.
In this case, the given measurement is in millimeters (mm), so the radius (r) of the coin would be half the diameter. The given measurement is 19 mm, so we need to divide it by 2 to find the radius.
r = 19 mm / 2 = 9.5 mm
Now, we can substitute this value into the area formula:
A = 3.14 * (9.5 mm)^2
Simplifying the equation further:
A = 3.14 * 90.25 mm^2
A = 283.265 mm^2
To round to the nearest tenth, we consider the digit in the tenths place, which is 6 in this case. Since the digit after 6 is below 5, we round down. Therefore, the area of the coin to the nearest tenth is approximately:
A ≈ 283.3 mm^2