What steps should be taken to calculate the volume of the right triangular prism? Select three options.

Use the formula to find the area of the base.
Use the formula to find the area of the base.
The area of the base, A, is .
The area of the base, A, is .
The volume of the prism, is

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm