Question

A square room has a floor area of 81 square meters. The height of the room is 5 meters. What is the area of one wall

Answer 1

Area of a square is side length ^2

To find the length of the side of a square from the area, that’s the square root of the area:

Length of side = sqrt(81) = 9 meters

Area of wall = length of side x height:

Area of wall = 9 x 5 = 45 square meters

Answer: 45 square meters