Question 52

An open box is made by cutting the congruent squares from the corners of a rectangular sheet of cardboard of dimensions 20 cm × 15 cm. If the side of each square is 2 cm, the total outer surface area of the box is

Name: An open box is made by cutting the congruent squares from the corners of a rectangular sheet of cardboard of dimensions 20 cm × 15 cm. If the side of each square is 2 cm, the total outer surface area of the box is
Uploaded: 2026-04-30T13:36:21.546982+05:30
Duration: 4 min 48 s
Description: An open box is made by cutting the congruent squares from the corners of a rectangular sheet of cardboard of dimensions 20 cm × 15 cm. If the side of each square is 2 cm, the total outer surface area of the box is

Solution

Total area of the cardboard is $$20\times\ 15=300m^2$$ Area of the four squares is $$2\times\ 2\times\ 4=16\ m^2$$

Remaining area is 300-16=284

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