The total surface area of a closed cube is 1350 cm2. What is the length of each side of this cube ?

21 cm 20 cm 15 cm 18 cm

15 cm

We know that, The total surface area of cube = 6 × (Side of the cube)2 We have, The total surface area of cube = 1350 cm2 = 1350 = 6 × (Side)2 = Side 2 = 225 = Side = 15 cm