Question

find the surface area of a 10cm, 4cm 20cm brick

Answer 1

80cm.cm will be the answer of it

Answer 2

HEY MATE HERE IS YOUR ANSWER

$2(lb + bh + hl)$
Put values
$2(10 \times 4 + 4 \times 20 + 20 \times 10)$
$2(40 + 80 + 200)$
$2(320) = 640 {cm}^{2}$
Thanks hope it will help you
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