Question

Find the surface area of chalk box, whose length - breadth and height are 18cms,10cms and 8cms respectively.

Answer 1

$sol) \\ length \: = 18cm \\ breadth \: = 10cm \\ height \: = 8cm \\ surface \: area \: of \: cubooidal \: chalk \: box \: = 2(lb + bh + hl) \\ \: \: \: \: \: \: = 2(18 \times 10 + 10 \times 8 + 8 \times 18) \\ \: \: \: \: \: \: = 2 \times 404 \\ \: \: \: \: \: \: = 808 {cm}^{2} \\ hope \: it \: helps \: u \:$
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