329 sweets
16 full bags
Explanation:
7bags x 47sweets per bag = 329sweets
329sweets / 20sweets = 16 FULL bags
??? what steps are you talking about. lol
Hello!
To find the surface area of a cylinder you use the equation
![SA = 2 \pi rh + 2 \pi r^{2}](https://tex.z-dn.net/?f=SA%20%3D%202%20%5Cpi%20rh%20%2B%202%20%5Cpi%20%20r%5E%7B2%7D%20)
SA is surface area
r is radius
h is height
PUt in the values you know
![SA = 2 \pi (7)(18) + 2 \pi * 7^{2}](https://tex.z-dn.net/?f=SA%20%3D%202%20%5Cpi%20%287%29%2818%29%20%2B%202%20%5Cpi%20%20%2A%207%5E%7B2%7D%20)
Square the number
![SA = 2 \pi (7)(18) + 2 \pi * 49](https://tex.z-dn.net/?f=SA%20%3D%202%20%5Cpi%20%287%29%2818%29%20%2B%202%20%5Cpi%20%2A%2049)
Multiply 7 and 18
![SA = 2 \pi * 126 + 2 \pi * 49](https://tex.z-dn.net/?f=SA%20%3D%202%20%5Cpi%20%2A%20126%20%2B%202%20%5Cpi%20%20%2A%2049)
Multiply 126 by 2
![SA = 252 \pi + 2 \pi * 49](https://tex.z-dn.net/?f=SA%20%3D%20252%20%5Cpi%20%20%2B%202%20%5Cpi%20%20%2A%2049)
Multiply the 49 by 2
![SA = 252 \pi + 98 \pi](https://tex.z-dn.net/?f=SA%20%3D%20252%20%5Cpi%20%20%2B%2098%20%5Cpi%20)
Add
![SA = 350 \pi](https://tex.z-dn.net/?f=SA%20%3D%20350%20%5Cpi%20)
The answer is
![A)350 \pi cm^{2}](https://tex.z-dn.net/?f=A%29350%20%5Cpi%20cm%5E%7B2%7D%20)
Hope this helps!
Step-by-step explanation:
a) gradient= y2-y1/x2-x1
gradient of AB:
gradient=-4-1/2-3
=-5/-1
=5
gradient of BC:
=-5+4/7-2
=-1/5
b) as the priduct of both gradient is -1 ,both lines are perpendicular.
c) as we have seen lines are perpendicular so it is a right angled triangle.