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miss Akunina [59]
3 years ago
7

Julie is constructing a scale model of her room.The rectangular room is 10 1/4 inches by 8 inches.If 1 inch represents 2 feet of

the actual room,what is the scale factor and the actual area of the room?
Mathematics
2 answers:
zlopas [31]3 years ago
6 0
The way to determine this is to know that 1 foot is 12 inches (so 2 is 24) 
Now the ration that would determine the scale factor of the room is 1:24 (1 inch for every 24 inches)
So the scale factor is 1:24
Now to determine the area we multiply the numbers we have by 2 and change the inches to feet (I hope that makes sense to you, it does to me, I'll show you)
10.25 * 2 = 20.5 ft.
8 * 2 = 16 ft.
now we know the dimensions of the room so we need to find the area.
A=B*H
20.5 * 16 = 328
so the area of the room is 328 ft.²
kvasek [131]3 years ago
6 0

Answer:

328 square feet.

Step-by-step explanation:

Julie is constructing a scale model of her room.

The model of the rectangular room is 10\frac{1}{4}  inches by 8 inches.

The scale factor of the model is 1 inch = 2 feet.

The actual length of the room = 10\frac{1}{4} × 2

                                                  = \frac{41}{4} × 2

                                                  = \frac{41}{2}

                                                  = 20\frac{1}{2} feet

                                                  = 20.5 feet

The actual width of the room = 8 × 2

                                                = 16 feet.

The actual size of the room is 20.5 feet by 16 feet.

Area = Length × width

Area of the room = 20.5 × 16

                             = 328 feet²

actual area 328 square feet and scale factor is 1 inch = 2 feet.

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