a cuboid has total surface area of 50 cm square and lateral surface area are 30 cm square find the base of the cuboid
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T.S.A. of cuboid= 2(lb+by+lh)
50cm sq= 2(lb+bh+lh)
50cm sq /2 = lb+bh+lh
25 cm = lb+bh+lh. eq (1)
L.S.A. of cuboid= 2 ( l+b) h
30 cm sq = 2( l+b) h
15 cm = lh+bh
put the value of lh+bh in eq 1
25 cm = lb + 15 cm
lb = 10cm
area of base = l*b
= 10
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