The volume of a cone varies jointly as the height and the square of the radius. Suppose a cone has the measurements \( V=5425.92 \) cubic meters, \( r=12 \) meters and \( h=36 \) meters. Step 1 of 2 : Find the constant of proportionality \( k \), rounded to two decimal places if necessary, and use it to write an equation that models the relationship.

1 مسقط النقطة (0 , 2.5) على المحف

adius of a circle is 14.5 cm , Find the area (in \( \mathrm{cm}^{2} \) ) of the circle. (Roun our answer in nearest tens). \( \begin{array}{llll}\text { (B) } 650 & \text { (C) } 650 & \text { (D) } 670\end{array} \)

Explain the relationship between equal chords and their distances from the center of a circle.

11. Si un rectángulo tiene un largo de 12 cm y un ancho de 5 cm , ¿cuál es su perimetro 4) 34 cm 3) 40 cm ) 60 cm

La somma e la differenza dei raggi di due circonferenze misurano 40 cm e 14 cm . Calcola la lunghezza di ciascuna circonferenza. \( [54 \pi \mathrm{~cm} ; 26 \pi \mathrm{~cm}] \)