What is the circumference of d=2.1cm using 22/7

If you think on circumference of a circle.

C = d * pi

pi = 22 / 7

C = d * pi

C = 2.1 * ( 22 / 7 ) = 2.1 * 22 / 7 = 46.2 / 7 = 6.6

To find the circumference of a circle, you can use the formula C = πd, where C represents the circumference and d represents the diameter of the circle. In your case, the diameter is 2.1 cm.

Step 1: Write down the formula for the circumference of a circle: C = πd.
Step 2: Substitute the given value of the diameter into the formula: C = π * 2.1 cm.
Step 3: Multiply π (pi) by 2.1: C = 2.1 * π cm.
Step 4: Approximate the value of π to the nearest decimal, which is 3.14: C = 2.1 * 3.14 cm.

Therefore, the circumference of a circle with a diameter of 2.1 cm, using an approximate value of π as 3.14, is approximately 6.594 cm.

To calculate the circumference of a circle, you need to use the formula C = π * d, where C represents the circumference and d represents the diameter of the circle.

Given that the diameter (d) of the circle is 2.1 cm, we can substitute this value into the formula:

C = π * d

C = 22 / 7 * 2.1 cm

Now, multiply 22/7 by 2.1 to get the circumference:

C ≈ 67.25714 cm

Therefore, the circumference of a circle with a diameter of 2.1 cm using the approximation of π as 22/7 is approximately 67.25714 cm.