Question

I am observing that the length, breadth and height of the rectangular parallelopiped box, brought by my brother, are 40 cm, 25 cm and 15 cm respectively.

January 1, 2024

Answer

Total surface area of a rectangular box

= 2 l×b + l×h + b×h)

= 2 (40 × 25 + 40 × 15+25 × 15) sqcm.

= 2 (1000+600+375) sqcm.

= 2 × 1975 sqcm.

= 3950 sq cm

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