If you picture a cylinder rolled out flat. there would be two circles for top and bottom and then a rectangle for the side. The rectangle would have width equal to height and length equal to circumference.
So then the areas of the pieces are added together to get total surface area.
= 2pi(3x-2)^2 + 2pi(3x-2)(x+3)
and you can simplify this is you want by multiplying through and combining like terms.
= 2pi(12x^2 - 5x -2)
or factor more to simplify the solution.
= 2pi(3x-2)(3x-2+x+3)
= 2pi(3x-2)(4x+1)
Answer:
1. 4 gal= 16 qt.
2. 6 qt= 12 pt.
3. 11 pt= 176 fl oz.
4. 18 c= 144 fl oz.
5. 48 qt= 12 gal.
6. 17 gal= 136 pt.
7. 19 qt= 76 c.
8. 256 c= 16 gal.
9. 12 gal= 96 pt.
10. 28 c= 14 pt.
11. 17 c= 136 fl oz.
12. 128 fl oz= 16 c.
13. 8 gal= 32 qt.
14. 20 qt= 640 fl oz.
15. 4 qt= 8 pt.
16. 18 qt= 72 c.
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10 groups of 3 students = 30
3 groups of 10 students = 30
5 groups of 6 students = 30
6 groups of 5 students = 30
2 groups of 15 students = 30
15 groups of 2 students = 30
1,000,000 + 10,000 + 100 + 1 + 0.1 + 0.001