Find the circumference of a circle whose diameter is 2xR=4.2 ft. Use Pi = 3.14, and round the result to the nearest tenth.
would this be 3.14*2*4.2ft?
This is a little tricky.
Let R = the radius
Let Pi = 3.14 as stated.
The circumference is (Pi)(2)(R)
The problem already calculates (2)(R) for you as 4.2 ft.
So,
circumference = (Pi)(4.2)
or
=(3.14)(4.2) ft.
Multiply and round as requested by the problem.
No wonder I kept getting a weird answer thank you for clarifying for me...
Your welcome!
Glad to help.
(3.14)(4.2)=13.188
would I round that to 13.19?
No, the problem requests to the nearest tenth which would be:
13.2 ft.
Also, don't forget the units.
ok thank you u r a lifesaver
To find the circumference of a circle, you can use the formula:
Circumference = π * diameter
Given that the diameter of the circle is 4.2 ft, you can substitute it into the formula:
Circumference = 3.14 * 4.2 ft
Now you can calculate the circumference:
Circumference ≈ 13.188 ft
Rounding to the nearest tenth:
Circumference ≈ 13.2 ft
So, the circumference of the circle is approximately 13.2 ft.