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

Question

asked Apr 24, 2021 73.3k views

1 Answer

MarkAWard · Answer 1 · 2021-05-01T07:36:36+0000

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