Cuboid height

What is the height of the cuboid if the edges of its base are 15 cm and 4 cm long and its volume is 420 cm cubic?

Correct answer:

h =  7 cm

Step-by-step explanation:

$$\begin{gathered} V=420{\text{cm}}^3 \\ a=15\text{ cm } \\ b=4\text{ cm } \\ S=a\cdot b=15\cdot 4=60{\text{cm}}^2 \\ h=V\mathrm{/}S=420\mathrm{/}60=7\text{ cm} \end{gathered}$$

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