For number one
S: supplement.
R: angle1+angle8 =18
#2
S: supplement
R: angle 3+ angle 6=180
The volume of a rectangular prism is obtained by multiplying the length, width and the height of the prism. <span>You can multiply them in any order to get the same different result. We calculate as follows:
V = lwh
V = </span>8 1 /2 (9 1 /3) (<span>12 2/5)
V = 983.73
Hope this answers the question. Have a nice day.</span>
