Question

A wall clock has a circumference of 31.4 inches. What is the area of the clock? (Use 3.14 for .)(2 points)
Responses

157 square inches
157 square inches
62.8 square inches
62.8 square inches
15.7 square inches
15.7 square inches
78.5 square inches

Answer 1

The formula to calculate the area of a circle using the circumference is:

Area = (circumference)^2 / (4 * pi)

Area = (31.4)^2 / (4 * 3.14)
Area = 985.96 / 12.56
Area = 78.5 square inches

So, the correct answer is 78.5 square inches.