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kodGreya [7K]
3 years ago
8

A window has the shape of a rectangle with a semi circle at the top. Find the approximate area of the window using the dimension

s shown. 4ft by 8ft
Mathematics
1 answer:
Usimov [2.4K]3 years ago
3 0

Answer:

82.24 or 44.56 square feet (depending on picture)

Step-by-step explanation:

To find the area of a rectangular window and semi circle on top use the formulas A=b*h and A= \pi r^2. Add the values from these two formulas and this is the area of the whole shape. Without the picture, its difficult to know what the measurements for the semi-circle are. There are two likely options:

  • The rectangular window has a height of 4 feet and a width of 8 feet. This means the semi-circle would have a diameter of 8 feet.
  • The rectangular window has a height of 8 feet and a width of 4 feet. This means the semi-circle would have a diameter of 4 feet.

Option #1:

The rectangular window has base of 8 feet and a height of 4 feet. This means the semi-circle has a diameter of 8 feet and a radius of 4 feet. The formulas are:

A=b*h=8*4 = 32

[tex]A= \pi r^2= \pi (4)^2=50.24/tex]

The area together is 32 + 50.24 = 82.24 square feet.

Option #2:

The rectangular window has base of 4 feet and a height of 8 feet. This means the semi-circle has a diameter of 4 feet and a radius of 2 feet. The formulas are:

A=b*h=4*8 = 32

[tex]A= \pi r^2= \pi (2)^2=12.56/tex]

The area together is 32 + 12.56 = 44.56 square feet.


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Step-by-step explanation:

We can solve this by setting up a couple of equations.

Let's allow x to represent the number of paperbacks Tim owns, and allow y to represent the number of hardcover books he owns.

Using the information in the question, we can write the equations:

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Let's rearrange equation 1 so that it is in standard form:

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