Side of a cube is 4.5 cm. Find the surface area of all vertical faces and total surface area of the cube.
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Answer:
Side of the cube, l = 4.5 cm
∴ Surface area of all vertical faces of the cube = 4l² =4×(4.5 cm)²
=4×20.25cm²
=81 cm²
Also,
Total surface area of the cube =6l²
=6×(4.5 cm)²
=6×20.25 cm²
=121.50 cm²
Thus, the surface area of all the vertical faces and total surface area of the cube is 81 cm² and 121.50 cm², respectively.
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