Question

the total surface area of a cube is 864sq.cm. find its lateral area

Answer 1

bro I think u asked for volume

TSA of cube = 864
=> 6a^2 = 864
=> a^2 = 144
=> a = 12
Edge of cube = 12 cm
Volume = a^3
= 12*12*12
= 144 * 12
= 1728 cm^2

Answer 2

We know that,

Total Surface Area of cube = 6a^2

=> 6a^2 = 864

=> a^2 = 144

=> a = 12

Edge of cube = 12 cm

Lateral Surface Area = 4a^2

= 4 × 12 × 12

= 4 × 144

= 576 cm^2