Question

find the total surface area of the following ​

Answer 1

Step-by-step explanation:

1.CUBE :-

${6 \: l}^{2} \\ 6 \times ({6})^{2} \\ 6 \times 36 \\ = 216 {cm}^{2}$

2.Cuboid:-

$l = 12 \\ b = 6 \\ h = 4 \\ = 2(lb + bh + lh) \\ 2(12 \times 6 + 6 \times 4 + 12 \times 4) \\ = 2(72 + 24 + 48) \\ = 2(144) \\ = 288 {cm}^{2}$

3.cuboid

$l = 15 \\ b = 3.5 \\ h = 2 \\ total \: surface \: area \: of \: cuboid \: \\ = 2(lb + bh + lh) \\ = 2(15 \times 3.5 + 3.5 \times 2 + 15 \times 2) \\ = 2(52.5 \times + 7 + 30) \\ = 2(89.5) \\ = 179 {cm}^{2}$

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Answer 2

Answer:

i don't no

Step-by-step explanation:

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