Two gears are adjusted so that the smaller gear drives the larger one, as shown in the figure. If the smaller gear rotates through an angle of \( 270^{\circ} \), through how many degrees will the larger gear rotate?

11. \( A B C D \) sinia chiziq yasang, uning \( A B \) bo'g'ini \( 4 \mathrm{~cm} 7 \mathrm{~mm}, B C \) bo'g'ini \( =6 \mathrm{~cm} 3 \mathrm{~mm}, C D \) bo'g'ini \( =3 \mathrm{~cm} 5 \mathrm{~mm} \) bo'lsin. Shu siniq chiziqning umumiy uzunligini toping.

1. Нарисуйте произвольный треугольник \( B K X \). Обозначьте буквами и запишите: а) сторону, лежащую напротив угла \( K \); б) угол между сторонами \( B X \) и \( K X \); в) стороны, прилежащие к углу \( X \); г) углы, прилежащие к стороне \( B K \).

a. Find the area of the bigger room if the area of the smaller room is \( 8 \mathrm{~m}^{2} \). b. Find the ratio of their lengths c. If the length of the larger room is 10 m , find the length of the smaller one. \#\#\#ENDi\#\#\#

X EXERCICE 15 \( A B C \) est un triangle. 1. Construire le point \( D \) tel que \( \overrightarrow{A D}=\overrightarrow{A B}-\overrightarrow{A C} \). Que peut-on dire du quadrilatère \( A D B C \) 2. Construire le point \( M \) tel que \( \overrightarrow{B M}=\overrightarrow{B C}-\overrightarrow{C A} \).

Echelle \( 1: 25^{\prime} 000 \). distance sur la carte : 10 cm . distance réelle en km ?