A brand new filled can of chicken broth is 10 cm tall and has a radius of 10 cm . Mishka uses some of the broth to cook and now the broth left in the can is 6 cm high. Approximately how much broth did Mishka use? Use 3.14 for pi. \( \begin{array}{ll}-4,712 \mathrm{~cm}^{3} & \\ \text { - } 1,885 \mathrm{~cm}^{3} & 1,257 \mathrm{~cm}^{3}\end{array} \)

(100) Il perimetro di un rettangolo è di 234 cm e la base è \( \frac{5}{4} \) dell'altezza. Calcola l'area.

9. Luis noticed that on a ruler, 5 inches is equal to 12.7 centimeters. The diagonal of his computer screen measure 18.5 inches. Write a proportion to find \( x \), the length of the diagonal of the computer screen in centimeters and solve for \( x \).

Select three ratios that are equivalent to \( 16: 12 \)

10. Si \( A=x^{a}-7 x^{a-1}+x^{a-2} \) \( B=9 x^{a}-x^{a-1} \quad C=12 x^{a}-18 x^{a-2} \) Calcula: \( \begin{array}{lll}\text { a) } A \cdot B & \text { b) } B \cdot C & \text { A) } B \cdot B\end{array} \)

\( !13 \)