वि कंL2 AN8_Bsen G \asman. $raXn oo w03B vom® \aseaen 03, � – InterviewSolution

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वि कंL2 AN8_Bsen G \asman. $raXn oo w03B vom® \aseaen 03, हि. &%Wo\z

Answer»

Givenl+b+h=17digonal=13 cmNow,diagonal =√l²+b²+h² = 13⇒l²+b²+h² = 13² = 169

l+b+h=17⇒(l+b+h)²=17² = 289⇒l²+b²+h²+2(lb+bh+lh)=289⇒169 + total surface area = 289⇒TSA = 289-169 = 120cm²

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