7. \( m \angle \mathrm{~A}=40^{\circ}, m \angle \mathrm{~B}=88^{\circ}, a=15 \) Find \( b \).

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\#\#\#

1. Determine the volume of a cube with sides of 30 mm . Express your answer in \( \mathrm{cm}^{2} \). 2. Calculate the volume of the following reetangular blocks: (a) length 40 cm ; heighth 30 cm ; width 15 cm . (b) Iength \( 1,5 \mathrm{~m} \); height \( 0,3 \mathrm{~m} \); width 50 cm . Express your answers in standard form, first in \( \mathrm{cm}^{3} \), then in \( \mathrm{m}^{3} \). 3. Astorage bin is 2 m long with vertical sides and a cross-section in the form of a trapezium as shown. What is the capacity of the bin?

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 \( B K \).

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 \( \overrightarrow{B M}=\overrightarrow{B C}-\overrightarrow{C A} \).

(Geometry, Unit 1, Lesson 20) a. Describe a transformation that could be used to show that corresponding angles are congruent. Type your response in the space below. B I Type here