Question

Total surface area of a box of cuboid shape is 500 sq unit.Its breadth and height is 6 unit and 5 unit respectively.What is the length of the box?

Answer 1

Here is the step-by-step explanation of your query:-

Given:- TSA of Cuboid = 500 sq unit

Breadth = 6 unit

Height = 5 unit

TSA of cuboid = 2(lb + bh + hl)

500 = 2( L×6 + 6×5 + 5×L )

500 = 2 ( 6L + 30 + 5L )

500 = 2 ( 30 + 11L )

500/2 = 30 + 11L

250 = 30 + 11L

250-30 = 11L

220/11 = L

20 = L

Therefore length of cuboid = 20 units

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