Question

find the surface area of a rectangular packing box measuring 12 inch in length 5 inch in width and 2 inch in height​

Answer 1

Step-by-step explanation:

TSA= 2(l^2+b^2+h^2)

=2(144+25+4)=2×173=346in^2

Answer 2

given-- L=12 inch

B=5 inch

H=2 inch

TSA= 2(lb+lh+bh)

Step-by-step explanation:

ans= 2(12*5+12*2+5*2)

=2(60+24+10)

120+48+20=188

so answer is 188in^2

hope it helps u ☺️