The lateral area of a regular square prism is 110 sq.m. and the altitude of the prism is 3 dm. How long is an edge of the base?

Thank you! :)

A dm  = .1m   ... so 3dm  = .3m

The lateral area (area of the sides) is given by  4*s*.3    where s is = the side of the base

So

4*s*.3m = 110m^2

1.2s = 110    divide by 1.2

s = 275/3 = about 91.667m