# For thinkings

The glass cube dive into the aquarium, which has a length of 25 cm, width 20 cm and height of 30 cm. Aquarium water rises by 2 cm.

a) What is the volume of a cube?
b) How many centimeters measure its edge?

Result

V =  1000 cm3
a =  10 cm

#### Solution:

$V=25 \cdot \ 20 \cdot \ 2=1000 \ \text{cm}^3$
$a=\sqrt[3]{ 25 \cdot \ 20 \cdot \ 2}=10 \ \text{cm}$

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