What measurement do you want to be found? I'll give the surface area and volume for you, if that helps.
The formula for the volume of a rectangular box/prism is V=LWH or V=BH, where l is length, w is width, h is height, and b is base area.
12 times 3 times 4 is 144. The volume is 144in^3.
The surface area is 2(WL+HL+HW). 2(12+48+36)=2(96)=192. The surface area is 192in^2.
What measurement do you want to be found? I'll give the surface area and volume for you, if that helps.
The formula for the volume of a rectangular box/prism is V=LWH or V=BH, where l is length, w is width, h is height, and b is base area.
12 times 3 times 4 is 144. The volume is 144in^3.
The surface area is 2(WL+HL+HW). 2(12+48+36)=2(96)=192. The surface area is 192in^2.