Question

In a human nose, the total area of the region that detects our odors is about ¾ in^2. Compare that to the sensory organ of a hunting dog, whose nose has an active area of about 65 cm^2.

Answer 1

Let it be x

$\\ \sf\longmapsto \dfrac{3}{4}x=65$

$\\ \sf\longmapsto x=65\times \dfrac{4}{3}$

$\\ \sf\longmapsto x=\dfrac{260}{3}$

$\\ \sf\longmapsto x\approx82$