The population of frogs at a lake is 12 frogs per square meter what will be the estimated population of frogs in a habitat of 370 square meters

12 frogs : 1 m^2
X frogs : 370 m^2

Cross multiply to get
X*1 = 12*370 = 4440 frogs 

if the distribution of frogs is perfectly uniform with 12/m^2, there will be 4440 frogs in the habitat.

By the way, if you go there, watch every step in case you might step on some of the poor croakers.