The diagram below shows the radius of the face of a watch.
Which of the following is closest to the area of the face of the watch?
Responses
A 34.54 mm²34.54 mm²
B 34.33 mm²34.33 mm²
C 1,519.76 mm²1,519.76 mm²
D 379.94 mm²
To find the area of the face of the watch, we need to calculate the area of a circle using the formula A = πr^2, where r is the radius of the circle.
Given that the radius of the face of the watch is 7.4 mm, we can calculate the area using the formula:
A = π(7.4)^2
A = 54.76 π
A ≈ 171.90 mm^2
The closest option to this calculation is:
A) 34.54 mm²