Question

HELP FAST PLZ I HAVE LITTLE TIME I DONT WANT TO FAIL.

Answer 1

Given:

Given that the diameter of the circle is
`(7)/(2) \ cm`

We need to determine the radius, circumference in terms of π and circumference using π = 3.14.

Radius:

The radius of the circle can be determined using the formula,

`r=(d)/(2)`

Substituting
`d=(7)/(2)`, we get;

`r=(((7)/(2)))/(2)}`

Simplifying, we get;

`r=(7)/(4) \ cm`

Thus, the radius of the circle is
`(7)/(4) \ cm`

Circumference in terms of π:

The circumference of the circle can be determined using the formula,

`C=2 \pi r`

Substituting
`r=(7)/(4) \ cm`, we get;

`C=2 \pi ((7)/(4))`

`C=(7)/(2) \pi \ cm`

Thus, the circumference in terms of π is
`(7)/(2) \pi \ cm`

Circumference using π = 3.14:

Substituting π = 3.14 in the circumference of the circle
`C=(7)/(2) \pi \ cm`, we get;

`C=(7)/(2)(3.14)`

`C=10.99 \ cm`

Thus, the circumference of the circle is 10.99 cm