a model lighthouse uses a scale of 1/4 inch=5 feet. The height of the model lighthouse s 6 3/8 inches.

What is the height of the actual lighthouse?

7 answers

To find the height of the actual lighthouse, we need to use the scale factor provided, which is 1/4 inch = 5 feet.

First, we need to convert the height of the model lighthouse to feet:
6 3/8 inches = 6 + 3/8 = 6.375 inches
Now, to convert inches to feet, we divide by 12:
6.375 inches ÷ 12 = 0.53125 feet

Next, we use the scale factor to find the height of the actual lighthouse:
0.53125 feet (model height) * 5 feet (scale factor) = 2.65625 feet

Therefore, the height of the actual lighthouse is 2.65625 feet.
what is the height of the actual lighthouse in fractions?
To express the height of the actual lighthouse in fractions, we can use the original model height in fractions.

We previously calculated the model height to be 6 3/8 inches, which is equivalent to 6.375 inches.

Converting 2.65625 feet to an improper fraction:
2.65625 = 2 + 0.65625 = 2 + 65625/100000 = 2 + 13125/20000

Therefore, the height of the actual lighthouse is 2 13125/20000 feet, which can also be simplified to 2 525/8000 feet.
mixed numbers
To convert the improper fraction 13125/20000 to a mixed number, we first divide the numerator by the denominator:

13125 ÷ 20000 = 0.65625

Now, to convert the decimal to a fraction, we can represent it as a mixed number:

0.65625 = 65625/100000 = 65625/20000 = 13125/20000

Therefore, the height of the actual lighthouse in mixed number form is 2 525/8000 feet.
a. 25 1/2 ft
b. 31 7/8 ft
c. 76. 1/2 ft
d. 127 1/2 ft

choose one of these answers
The height of the actual lighthouse, in mixed number form, is 2 525/8000 feet.

Let's simplify this fraction:
525 and 8000 can both be divided by 25:
525 ÷ 25 = 21
8000 ÷ 25 = 320

So, 525/8000 simplifies to 21/320.

Now, the height of the actual lighthouse in mixed number form is:
2 21/320 feet

None of the given answer choices match this result, so there seems to be an error in the calculation. Let's correct this.

21/320 can be converted to a decimal for easy comparison:
21 ÷ 320 ≈ 0.065625

Thus, the height of the actual lighthouse in mixed form is approximately 2 21/320 feet, which best matches the original value of 2 13125/20000 feet.