Question

The diagonal of the floor of a rectangular room is 712 feet. The shorter side of the room is 412feet. What is the area of the room?

Answer 1

in triangle bcd

by phythagoras theorem

bd^2=bc^2+dc^2

(712)^2 =( 412)^2 +dc^2

506944 = 169744 +dc2

506944-169744=dc^2

337200=dc^2

root 337200=dc

580.6 =dc