Answer:
246 ft^2
Step-by-step explanation:
First, break it into smaller rectangles:
3*6=12
6*9=54
15*12=180
Add the areas together
12+54+180=246
The area of the figure is 246 ft^2
The total number of rooms in the apartment building is 816
Answer:
a) 5r +3 + 2(r+9) = 7r + 21
b) 2 (4w - 5) - 2 (w - 7) = 6w + 4
Step-by-step explanation:
a) 5r +3 + 2(r+9) = 5r +3 + 2r +18 = 7r + 21
b) 2 (4w - 5) - 2 (w - 7) = 8w -10 -2w +14 = 6w + 4
A) L = 2WB) 2L + 2W = 300
Multiplying A) by -2A) -2L = -4WThen adding it to B)B) 2L + 2W = 3002W = 300 -4W
6W = 300Width = 50Looking at equation A) we calculate
Length = 100
