1. Surface area of rectangular prism = 2(lb+bh+lh)
Ans = 2(3*2 + 2*4 + 3*4) = 2(6+8+12) = 52 in^2
Fourth option
2. Length of cube = x feet
Surface area = 6x²
Fourth option
3. Surface area of cylinder = πr(2h+r)
Ans = 3.14*1(2*15+1) = 97.34 cm²
second option
4. Same formula as 1
Ans = 2(10*8 + 8*12 + 10*12) = 2(80+96+120) = 592 in²
fourth option