To find the area of each room, you need to multiply the length and width together.
Music Room - 3x6 = 18 units²
Dance Room - 4x6 = 24 units²
Play Room - 3x7 = 21 units²
Living Room - 5x5 = 25 units²
Kitchen - 6x6 = 36 units²
Bedroom - 6x7 = 42 units²
Closet - 4x4 = 16 units²
Guest Room - 5x7 = 35 units²
Black (Empty) Space - 1x2 = 2 units²
18 + 24 + 21 +25 +36 +42 + 16 + 25 + 2 = 209 units²