What is the area of a circle with a diameter of 10 millimeters? Estimate the area to the tenths place using 3.14 for pi
The radius of the circle is half of the diameter, so it would be 10/2 = 5 millimeters.
The formula to calculate the area of a circle is A = πr^2, where A is the area and r is the radius.
Using 3.14 for π and a radius of 5 millimeters, we can estimate the area to the tenths place:
A ≈ 3.14 × 5^2
A ≈ 3.14 × 25
A ≈ 78.5
Therefore, the estimated area of a circle with a diameter of 10 millimeters is approximately 78.5 square millimeters.