To find the actual area of the bedroom using the given scale of 1 cm = 4 ft, we first need to convert the dimensions of the scale drawing into actual dimensions.
The dimensions of the bedroom in the scale drawing are:
- Width: 2.5 cm
- Length: 3.5 cm
Now, we convert these measurements to feet using the scale:
-
Actual width: \[ \text{Actual Width} = 2.5 , \text{cm} \times 4 , \text{ft/cm} = 10 , \text{ft} \]
-
Actual length: \[ \text{Actual Length} = 3.5 , \text{cm} \times 4 , \text{ft/cm} = 14 , \text{ft} \]
Next, we calculate the area of the actual bedroom:
\[ \text{Area} = \text{Width} \times \text{Length} = 10 , \text{ft} \times 14 , \text{ft} = 140 , \text{ft}^2 \]
Thus, the actual area of the bedroom is:
140