Question

find surface area of a box whose length equals to 15 cm and the breadth equals to 10 cm and height equals to x cm​

Answer 1

Answer:

Surface area = 2 ( lw + wh + lh )

                       = 2 ( 15 x 10 + 10x + 15x)

                       = 2 ( 150 + 25x )

                       = 300 + 50x

Answer 2

HERE IS YOUR ANSWER MATE....;

$= >area \: = 300 + 50x$

HOPE IT'S HELPFUL....:-)