# 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 result:

h =  7 cm

#### Solution:

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

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