-9 8/9 pretty sure hope this helps
Answer:
She will need 4 square and 8 triangular pieces.
Step-by-step explanation:
For every 6 pieces of cloth, 2 are squares.
So, for 12 pieces of cloth, the no. of square pieces would be,
![12 \times \frac {2}{6}](https://tex.z-dn.net/?f=12%20%5Ctimes%20%5Cfrac%20%7B2%7D%7B6%7D)
= ![2 \times 2](https://tex.z-dn.net/?f=2%20%5Ctimes%202)
= 4
As the remaining pieces will be triangles, so the no. of triangular pieces will be, equal to,
(12 - 4) = 8
Answer:
triangle; area = 90 ft2
Step-by-step explanation:
THe type of two dimensional solid created by a vertical cross section of the cone that passes through the apex is a triangle, as you can see in the picture, if you draw a line that cuts the cone in half passing through the apex it would just be a triangle, and the area of the cross section is given by the formula:
![a=\frac{b*h}{2}](https://tex.z-dn.net/?f=a%3D%5Cfrac%7Bb%2Ah%7D%7B2%7D)
Since you have the radius of the base of the cone, you need the diameter to calculate the area, the diameter is given by the next formula:
![D=2r](https://tex.z-dn.net/?f=D%3D2r)
![D=2(6)](https://tex.z-dn.net/?f=D%3D2%286%29)
![D=12](https://tex.z-dn.net/?f=D%3D12)
Now you just put your values into the formula of the triangle:
![a=\frac{(12)(15)}{2}](https://tex.z-dn.net/?f=a%3D%5Cfrac%7B%2812%29%2815%29%7D%7B2%7D)
![a=\frac{(180}{2}](https://tex.z-dn.net/?f=a%3D%5Cfrac%7B%28180%7D%7B2%7D)
![a=90](https://tex.z-dn.net/?f=a%3D90)
So the area of the triangle formed is:
![90ft^{2}](https://tex.z-dn.net/?f=90ft%5E%7B2%7D)