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juin [17]
4 years ago
9

A lunette is a semicircular window that is sometimes placed above a doorway or above a rectangular window. A certain lunette has

a diameter of 40 in. To the nearest square inch, what is the area of the lunette?
The area of the lunette is ≈ ____ in2.

Mathematics
1 answer:
soldier1979 [14.2K]4 years ago
8 0

A lunette is a semi-circle, which means that it is one half of a circle. To find its area, we can find the area of the whole circle and divide it by two.

Area of a circle: A = pi x r^2

r = 40 / 2 = 20

A = pi x 20^2

A = 400pi / 2 = 200pi

200pi = 628.32

The area of the lunette is approximately 628 in^2.

Hope this helps!! :)

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Someone please help me.
adoni [48]
<h3>Answer:  16 feet</h3>

Work Shown:

L = d+9 = length along the horizontal

W = 10 feet = width along the vertical

P = 2(L+W) = perimeter of rectangle = 70 feet

70 = 2(d+9+10)

70/2 = d+19

35 = d+19

d+19 = 35

d = 35-19

d = 16

The deep end is 16 feet wide

6 0
3 years ago
Line segment CD begins at (−1,1) and ends at (4,1). The segment is translated 2 units down to form line segment C'D'. Line segme
dusya [7]

Answer:

  D' = (4, -1)

Step-by-step explanation:

Translation down by 2 units subtracts 2 from the y-coordinate. The x-coordinate remains unchanged. You can see this in the descriptions of C and C':

  • C = (-1, 1)
  • C' = (-1, -1) . . . . . 2 is subtracted from y=1 to get y=-1

Likewise:

  • D = (4, 1)
  • D' = (4, -1)

__

The translated segment is still a horizontal segment, now at y=-1 instead of at its previous position of y=1.

6 0
4 years ago
Given the following angles, what is the common side of
Doss [256]

Answer:

cheez

Step-by-step explanation:

7 0
3 years ago
I need some help! please help me if you know the answers! will give brainliest!
miv72 [106K]
C because you have to round and it would be C
7 0
3 years ago
Read 2 more answers
Karen operates a hot dog stand. On Wednesday she used 9 1/3 bags of hot
trapecia [35]
<h2>Explanation:</h2>

We know that Karen operates a hot dog stand. So we have:

<u>On Wednesday:</u>

<u></u>

<u></u>\text{She used} \ 9 \frac{1}{3} \ \text{bags of hot dog buns.}<u></u>

<u></u>

<u>On Thursday:</u>

<u></u>

<u></u>\text{She used} \ \frac{1}{3} \ \text{as many hot dog buns as on Wednesday}<u></u>

<u></u>

Therefore, if x is the amount of hot dog buns she used on Thursday, then:

x=\frac{1}{3}(9\frac{1}{3}) \\ \\ x=\frac{1}{3}\times 9+\frac{1}{3}\times \frac{1}{3} \\ \\ x=\frac{28}{9}

Therefore, on Thursday she used 28/9 bags of hot  dog buns.

6 0
3 years ago
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