Q4.The lateral surface area of a cuboidal box which is 3.5 m long 2 m broad and
10 m high is
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We are given l=8m,b=5m,h=3.5m. We know that
L.S.A. =2h(l+b)=2×3.5(8+6)=7×14=98m
2
Similarly,
T.S.A. =2(lb+bh+lh)=2(8×6+6×3.5+8×3.5)=2(48+21+28)=2×(97)=194m
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