Total surface area of a cube is 5400 sq. cm. Find the surface area of

1.	Total surface area of a cube is 5400 sq. cm. Find the surface area of all vertical faces of the cube.
Answer» Given: Total surface area of cube = 5400 sq.cm. To find: Surface area of all vertical faces of the cube i. Total surface area of cube = 6l² ∴ 5400 = 6l² ∴ 5400/6 = l² ∴ l² = 900 ii. Area of vertical faces of cube = 4l² = 4 x 900 = 3600 sq.cm. ∴ The surface area of all vertical faces of the cube is 3600 sq.cm.

Total surface area of a cube is 5400 sq. cm. Find the surface area of all vertical faces of the cube.

Answer»

Given: Total surface area of cube = 5400 sq.cm.

To find: Surface area of all vertical faces of the cube

i. Total surface area of cube = 6l²

∴ 5400 = 6l²

∴ 5400/6 = l²

∴ l² = 900

ii. Area of vertical faces of cube = 4l²

= 4 x 900 = 3600 sq.cm.

∴ The surface area of all vertical faces of the cube is 3600 sq.cm.