The diameter of a quarter is about 1
in.
You trace around the edge of the quarter on a sheet of paper.
What is the area of the circle on the paper?
Use 3.14
as an approximation for π
. Round your answer to the nearest tenth.
The radius of the circle is half the diameter, so it is 0.5 inches.
The formula for the area of a circle is A = π * r^2.
Substituting in the values, we get A = 3.14 * (0.5)^2 = 3.14 * 0.25 = 0.785 square inches.
Rounding to the nearest tenth, the area of the circle on the paper is approximately 0.8 square inches.