Question 769181
The volume of a prism is the area of the base times the height.
The area of a triangle is {{{base*height/2}}}.
In a right triangle, one of the legs can be considered the base while taking the other leg as the height.
A triangle with sides measuring 12 inches, 16 inches, and 20 inches is a right triangle with legs measuring 12 inches and 16 inches, and a 20-inch hypotenuse.
{{{12^2+16^2=20^2}}}
(so you have some redundant information).
The area of such a triangle is
{{{(12in)(16in)/2=96in^2}}}
The volume of the box is {{{(96in^2)(30in)=2880in^3}}}
The volume of the packing material that will fit around the statue in that box is
{{{2880in^3-1757in^3=1123in^3}}}