Answ
592 in²
Explanation:
Given
Length of the box L = 12 inches
Width W = 8 inches
height H = 10inches
Required
Surface Area of the box
Surface area of the rectangular boss = 2(LW + LH + WH)
Substitute the given values
Surface area = 2(12(8)+12(10)+8(10))
Surface Area = 2(96+120+80)
Surface Area = 2(96+200)
Surface area = 2(296)
Surface area = 592 in²
Hence 592 in² of wood would be needed by Mitchell to build the box