The area of a cardboard in CM2 needed to make a closed box of size 20 cm x 10 cm x 8 cm will be ........

Quantitative Aptitude (CGL) Mensuration 2D

The area of a cardboard (in CM² ) needed to make a closed box of size 20 cm x 10 cm x 8 cm will be:

This questions was previously asked in

SSC CGL 18th April 2022 Shift-3

880

690

750

960

- To find the surface area of a closed box, calculate the area of all six sides and sum them up.

- The box dimensions are 20 cm x 10 cm x 8 cm.

- There are two pairs of dimensions for opposite sides:

- 2 sides of 20 cm x 10 cm

- 2 sides of 10 cm x 8 cm

- 2 sides of 20 cm x 8 cm

- Calculate each pair's area:

- 2 x (20 cm x 10 cm) = 400 cm²

- 2 x (10 cm x 8 cm) = 160 cm²

- 2 x (20 cm x 8 cm) = 320 cm²

- Total surface area = 400 cm² + 160 cm² + 320 cm² = 880 cm²

- Correct Option: 1, 880

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