A bicycle training wheel has a radius of 3 inches. The bicycle wheel has a radius of 10 inches. Approximately how much smaller, in square inches, is the areaof the training wheel than the area of the regular wheel?Use 3.14 for pi
21.98
153.86
285.74
1,142.96
The area of a circle is calculated using the formula A = πr^2, where r is the radius of the circle.
For the training wheel:
A_training = π(3)^2
A_training = 28.26 square inches
For the regular wheel:
A_regular = π(10)^2
A_regular = 314 square inches
The difference in area is:
A_regular - A_training = 314 - 28.26
A_regular - A_training = 285.74
Therefore, the training wheel is approximately 285.74 square inches smaller than the regular wheel. The closest option is 285.74.
U sure
I apologize for the mistake in my previous response. Let's recalculate the areas:
For the training wheel:
A_training = π(3)^2
A_training = 28.26 square inches
For the regular wheel:
A_regular = π(10)^2
A_regular = 314 square inches
The difference in area is:
A_regular - A_training = 314 - 28.26
A_regular - A_training = 285.74
Therefore, the training wheel is approximately 285.74 square inches smaller than the regular wheel. Thus, the correct answer is 285.74.