Question

find answer.................

Answer 1

(1)
We know,
Volume of a cube=s×s×s
=7m×7m×7m
$= {343cm}^{3}$
Lateral surface Ar. =4×s×s
=4×7m×7m

$= 196 {cm}^{2}$
Total surface Ar. =6×s×s
=6×7m×7m

$= 294 {cm}^{2}$
(2)
Vol. of a cube=s×s×s
=5.6cm×5.6cm×5.6cm
$175.616 {cm}^{3}$
Lateral surface Ar. =4×s×s
=4×5.6cm×5.6cm
$125.44 {cm}^{2}$
Total surface Ar. =6×s×s
=6×5.6cm×5.6cm

$188.16 {cm}^{2}$