False on two counts. A rectangular shape is 2-dimensional and so can have no mass. If it is rectangular but has length, width and height then it is a cuboid object. Then, multiplying the length width and height will give the volume, not the mass.
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If you have a ruler then you could measure the length width and height and then multiply them together. (LWH is the formula)
The formula for a rectangular solid is to multiply the measurements of Length(L), Width(W) and Height(H). Ex: L x W x H = Volume
To figure out the surface area of a reactangular prism you have to multiply length x width and then multiply that by how many faces it has, to figure out volume you multiply the length x width x height of the prism and than you will find your answer!!!!!
It is 2*(Length*Breadth + Breadth*Height + Height*Length).
width*height*length=perimeter of a rectangular prism! :)
A rectangular prism has a volume that can be found by multiplying the object's length width and height. To obtain the mass one must also know the density of the object and multiply that by the volume.
To find the volume of a rectangular prism, you multiply (length)(width)(height). In this case, you multiply 6 times 5 times 3, and your answer is 180.
A rectangle has only two dimensions, for example, length and width. If you multiply that, you get the area. A rectangular box has a length, width, and height. If you multiply all three, you get the volume.
just multiply length by height by depth/width.
you multiply the length times width times height.
You need to measure the length, breadth and height and multiply them together.
It is easiest to measure the length, breadth and height and multiply them together.
The volume of a rectangular prism is the length times the width times the height. The area of the base is length times width. Multiply that by the height. 384 cubic cm.
-- Multiply (length x width x height) in inches; divide the answer by 231 to get gallons. OR -- Multiply (length x width x height) in feet; divide the answer by 7.481 to get gallons.
To get the volume of a rectangular prism, you multiply the length, height, and depth/width measurements. For example: length= 5 cm width/depth= 2 cm height= 3 cm 5cm * 2 cm * 3 cm = 30 cm3 Don't forget units like cm3 or in3 or the like!
For a square prism, a rectangular prism, or a cube you multiply length times width times height.
Measure its length, width and height and multiply the three together.