Question 312607
find it by adding all the individual surface areas together. there are 2 of each side and there are 3 different sides.
{{{SA=2((LW)+(LH)+(WH))}}}
L=9
W=8
H=7
{{{SA=2((9*8)+(9*7)+(8*7))}}}
{{{SA=2((72)+(63)+(56))}}}
{{{SA=2(191)}}}
{{{SA=382}}}
surface area is 382cm