[tex]\qquad\qquad\huge\underline{{\sf Answer}}♨[/tex]
Volume of Rectangular prism ~
[tex]\qquad \sf \dashrightarrow \:length \times width \times height[/tex]
[tex]\qquad \sf \dashrightarrow \:20 \frac{1}{2} \times 10 \frac{1}{2} \times 12 [/tex]
[tex]\qquad \sf \dashrightarrow \:\frac{41}{2} \times \frac{21}{2} \times 12 [/tex]
[tex]\qquad \sf \dashrightarrow \:{41}{} \times {21}{} \times3 [/tex]
[tex]\qquad \sf \dashrightarrow \:2583 \: \: {m}^{3} [/tex]
