Answer:
1) 32
2) 8 yards
Step-by-step explanation:
1. We must first subtract the base area of the pyramid from the total surface area to get the lateral surface area:
![LA=2225-25^2=1600](https://tex.z-dn.net/?f=LA%3D2225-25%5E2%3D1600)
The lateral surface area is 4 times the area of one the congruent triangles.
![LA=4\cdot \frac{1}{2}\cdot 25\cdot x](https://tex.z-dn.net/?f=LA%3D4%5Ccdot%20%5Cfrac%7B1%7D%7B2%7D%5Ccdot%2025%5Ccdot%20x)
![\implies 1600=50x](https://tex.z-dn.net/?f=%5Cimplies%201600%3D50x)
![\implies \frac{1600}{50}=\frac{50x}{50}](https://tex.z-dn.net/?f=%5Cimplies%20%5Cfrac%7B1600%7D%7B50%7D%3D%5Cfrac%7B50x%7D%7B50%7D)
![32=x](https://tex.z-dn.net/?f=32%3Dx)
Therefore the height of the slant surface is 32 yards
2) The surface area of a cone is
, where l is the slant height.
We substitute the surface area S.A=151.58 and
to obtain:
![151.58=3.14\cdot 4^2+3.14\cdot 4 l](https://tex.z-dn.net/?f=151.58%3D3.14%5Ccdot%204%5E2%2B3.14%5Ccdot%204%20l)
![151.58=50.24+12.56l](https://tex.z-dn.net/?f=151.58%3D50.24%2B12.56l)
![101.34=12.56l](https://tex.z-dn.net/?f=101.34%3D12.56l)
![\frac{101.34}{12.56}=l](https://tex.z-dn.net/?f=%5Cfrac%7B101.34%7D%7B12.56%7D%3Dl)
l=8.06
To the nearest whole number, the slant height is 8 yards
Answer:
the answer is AREA= 144mm
Step-by-step explanation:
because all of a squares sides are=, and the formula of area for a square is side x side, so 12 x 12 = 144
<em>PLZ MARK BRAINLIEST</em>
Answer: (assuming there are absolute value bars on the x + 8) x = -7, x = -9
Step-by-step explanation:
x + 8 = 1
subtract 8
x = -7
x + 8 = -1
subtract 8
x = -9
Answer:
Step-by-step explanation:
it's the second answer , the number of degrees between 0 and -5
Answer:
True
Bones seperated from a joint
Step-by-step explanation: