Question

find the lateral surface of cuboid which is 15 metre long 6 metre broad and 4 metre high​

Answer 1

$l.s.a \: of \: cuboid \: = 2h(l + b) \\ = 2 \times 4 (15 + 6) \\ = 8 \times 21 \\ = 168m {}^{2}$

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