Answer :
The surface area of box A is 240in².
the surface area of box B is 246in².
What is Surface area?
This is referred to as the space/ area occupied by a three- dimensional object by its outer, flat surface of an object.
Formular for calculating surface area is:
Surface area, SA=( 2*L*W)+( 2*L*H) +=( 2*W*H)
where
Length, L
Height,H
Width,W
from the Question box A
L= 6in
W= 6in
H= 7in
Hence
Surface area, SA=( 2*L*W)+( 2*L*H) +=( 2*W*H)
=( 2*6*6)+( 2*6*7) +=( 2*6*7)
=72+84+84
= 240in².
from the Question box B
L= 3in
W= 8in
H= 9in
Hence
Surface area, SA=( 2*L*W)+( 2*L*H) +=( 2*W*H)
=( 2*3*8)+( 2*3*9) +=( 2*8*9)
=48+54+144
= 246in².
Learn more about surface area on
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