Respuesta :

Answer:

I think the D equals one (1) based on the info i was given

Step-by-step explanation:

Answer:

d = 6 units

Step-by-step explanation:

Circumference of the circle is given by:

[tex]C = \pi d[/tex]

where, d is the diameter of the circle.

As per the statement:

Given a circle 1 with measures of (C, d, and r) and a circle 2 with measures of (C', d', and r').

Circumference of a circle(C) 1 with diameter(d) is given by:

[tex]C = \pi d[/tex]               .....[1]

Also, the circumference of a circle (C') 2 with diameter(d') is given as:

[tex]C' = \pi d'[/tex]

Divide equation [1] and [2] we have;

[tex]\frac{C}{C'} = \frac{\pi d}{\pi d'}[/tex]

⇒[tex]\frac{C}{C'} = \frac{d}{d'}[/tex]

Substitute the given values [tex]\frac{C}{C'}=12[/tex] and d' = 0.50 then;

[tex]12 = \frac{d}{0.50}[/tex]

Multiply both sides by 0.50 we have;

6 = d

or

d = 6 units

Therefore, the value of d is, 6 units