Question

calcule o volume de cada paralelepípedo

Answer 1

v = 2√2.3√2.√128    fazendo √128 = √64.2 = 8√2
v = 2√2.3√2.8.√2
v = 2.3.8.√2.√2.√2
v = 48.2.√2
v = 96√2 cm³

v=2∛5. 3∛5.3∛40
v = 2.3.3.∛5.∛5.∛40
v = 18.∛5.5.40
v = 18.∛1000
v =18. 10
v = 180 cm³ 

Answer 2

então volume :

V= a * b * c

aplicando :

a)

\/128 * 3\/2 *2\/2=> 8\/2 * 3 * 2 * 2=> 92\/2cm^3

mmc de 128

128-2
64--2
32--2
16---2
8----2
4----2
2----2
1--------->\/ 2^2 * :2^2 * 2^2 * 2=>8\/2

b)
$2 \sqrt[3]{5} \times 3 \sqrt[3]{5} \times 3 \sqrt[3]{40} = \\ \\ 2 \sqrt[3]{5} \times 3 \sqrt[3]{5} \times 3 \times 2 \sqrt[3]{5} = \\ \\ 36 \sqrt[3]{125} = \\ \\ 36 \times 5 = \\ \\ 180cm ^{3}$


fazer mmc de 125 !!!

125-5
25--5
5----5
1-------->

\/5^2 *5=>

\/5^2 *\/5=>

5\/5