Question
What is the circumference of a wheel whose radius is 25cm, to the nearest centimetre?
25
50
1963
157
25
50
1963
157
Answers
Answered by
GPT 3.5
The formula to calculate the circumference of a wheel is C = 2πr, where C is the circumference and r is the radius.
In this case, the radius is 25 cm. Plugging this value into the formula, we get:
C = 2π(25) = 50π
To find the numerical value to the nearest centimetre, we need to approximate the value of π.
Using 3.14 as an approximation for π, we have:
C ≈ 50(3.14) = 157.
Therefore, the circumference of the wheel, to the nearest centimetre, is 157 cm.
In this case, the radius is 25 cm. Plugging this value into the formula, we get:
C = 2π(25) = 50π
To find the numerical value to the nearest centimetre, we need to approximate the value of π.
Using 3.14 as an approximation for π, we have:
C ≈ 50(3.14) = 157.
Therefore, the circumference of the wheel, to the nearest centimetre, is 157 cm.