Question

asked Aug 9, 2023 114k views

1 Answer

Christian Junk · Answer 1 · 2023-08-14T09:54:34+0000

1 )

volume = 20 * 5 * 8

$volume = 800 \: \: {m}^(3)$

$surface \: \: area \: = 4 * 20 * 8$

$surface \: area \: \: = 640 \: \: {m}^(2)$

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2 )

v = 15 * 3 * 4

$v = 180 \: \: {m}^(3)$

$s \: a \: = 4 * 15 * 4$

$s \: a \: = 240 \: \: {m}^(2)$

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3 )

$v = ( (1)/(2) * 4 * 5) * 10 \\$

$v = 100 \: \: {m}^(3)$

$s \: \: a = (10 * 5) + (10 * 4) + (10 * √(41) ) \\$

$s \: a \: \: = 50 + 40 + 10 √(41)$

$s \: a \: \: = 90 + 10 √(41)$

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4 )

$v = ( (1)/(2) * 3 * 4) * 7 \\$

$v = 42 \: \: \: {m}^(3)$

$s \: a \: \: = (3 * 7) + (4 * 7) + (5 * 7)$

$s \: a \: \: = 21 + 28 + 35$

$s \: a \: \: = 84 \: \: \: {m}^(2)$

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