Question

Answer and explain this

Answer 1

S. A. of cuboid is 2(lb+bh+hl)
S. A. of briefcase is 2(80*48+48*24+24*80)
= 2(3840+1152+1920)
= 2(6912)
= 13824 sq.cm
length of tarpaulin of 1 briefcase is = 13824/96
= 144 sq. cm
= 1.44 sq. mt
length of tarpaulin of 100 briefcase is
= 1.44*100 sq. mt
= 144 sq. mt