Question
What is the area of a circle with a diameter of 10 millimeters? Estimate the area to the tenths place using 3.14 for π
.(1 point)
Responses
A. 79 square mm
B. 314 square mm
C. 15.7 square mm
D. 78.5 square mm
.(1 point)
Responses
A. 79 square mm
B. 314 square mm
C. 15.7 square mm
D. 78.5 square mm
Answers
GPT 3.5
C. 15.7 square mm
To find the area of a circle, you use the formula A = πr^2. Since the diameter is given, we first need to find the radius by dividing the diameter by 2.
Radius = 10 mm / 2 = 5 mm
Now, substitute the radius into the formula:
A = 3.14 * (5)^2
A = 3.14 * 25
A = 78.5 mm^2
Rounding to the tenths place gives 15.7 square mm.
To find the area of a circle, you use the formula A = πr^2. Since the diameter is given, we first need to find the radius by dividing the diameter by 2.
Radius = 10 mm / 2 = 5 mm
Now, substitute the radius into the formula:
A = 3.14 * (5)^2
A = 3.14 * 25
A = 78.5 mm^2
Rounding to the tenths place gives 15.7 square mm.