6. Arrange the following procedure of using Salinometer according to the measuring standards and instruments.
1.
2.
3
4.
5.
Prepare brine solution.
Pour brine solution in a cylinder.
Dip salinometer in brine solution.
Record the reading.
Clean instrument after using.​

He trapezoid is composed of a rectangle and two triangles. what is the area of the rectangle? what is the total area of the triangles? what is the area of the trapezoid? ? a) 42 cm2; 27 cm2; 69 cm 2 b) 54 cm2; 27 cm2; 81 cm 2 c) 108 cm2; 27 cm2; 135 cm 2 d) 108 cm2; 13.5 cm2; 121.5 cm 2