19shortt
contestada

(Will mark best answer)
Two circles are shown in the diagram.

Since all circles are similar, a proportion can be set up using the circumference and diameter of each circle. Substitute the values d1 = 1, C1 = π, and d2 = 2r into the proportion.

C1/d1 = C2/d2

Which shows how to correctly solve for C2, the circumference of any circle with radius r?

Will mark best answerTwo circles are shown in the diagram Since all circles are similar a proportion can be set up using the circumference and diameter of each class=
Will mark best answerTwo circles are shown in the diagram Since all circles are similar a proportion can be set up using the circumference and diameter of each class=

Respuesta :

Answer:

its A i just took the test

Answer:

The first option is correct.

Step-by-step explanation:

The proportion we have is

[tex]\frac{C_1}{d_1}=\frac{C_2}{d_2}[/tex]

For the first ratio, we know that C₁ = π and d₁ = 1.  This gives us the ratio

π/1.

For the second ratio, we know that d₂ = 2r and we we do not know C₂.  This gives us

C₂/2r.

This gives us

[tex]\frac{\pi}{1}=\frac{C_2}{2r}[/tex]

Cross multiplying, we have

2r(π) = C₂(1)

2πr = C₂

Otras preguntas