Math, asked by roshangupta1802, 1 year ago

The sum of length breadth and height of a cuboidal room 26 and the length of its diagonal is 20 find the total surface area

Answers

Answered by bittu8539

2

(l+b+h)^2=l^2+b^2+h^2+2 (lb+bh+hl)
26^2=400+2 (lb+hl+bh)
276=surface area

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