yes Not always! Parallelogram: A quadrilateral with both pairs of opposite sides parallel is called as a parallelogram. Rectangle: A quadrilateral with both pairs of opposite sides parallel and all the internal angles are 90o is called as a rectangle. Rectangles satisfy the condition of a parallelogram. So, all rectangles are always parallelogram. But, all parallelograms are not rectangles. Source: www.icoachmath.com
According to the AVD Volume Calculator V. 5.3.1 (www.avlandesign.com)the Mass of a 3 inch high 12x12 inch Wooden board (given in pounds) is 122.67
Scientists can use density (mass/volume) to find out different types of minerals. This is only one example, there are countless more.
A peck is a dry volume equivalent to two gallons - whatever the gallon might be since that is not a standard volume.