railway RPF Constable Mock Test Series 2024 Quantitative Aptitude Mensuration Solid Figures

The length, the breadth, and the height of a closed cardboard box are in the ratio of 5 : 3 : 7, respectively. Find the length of this box, if its total surface area is 1278 cm2.

1
20 cm
2
15 cm
3
25 cm
4
10 cm
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