Surface area = base area + side area
= pi * 7^2 + pi * 7 * 27 = 238pi = 747.7 cm^2
Answer:
2 56 0 56 18 0 3 0 20 12 12 54 7 64 18 25 24 0 0 28 14 8 6 24 35 9 27 48 40 1 0 3 18 16 8 7 0 0 36 48 49 28 40 42 15 6 27 16 36 8 0 32 81 4 30 0 0 9 32 10 30 2 45 16 5 0 0 14 35 18 0 54 0 12 36 24 4 8 10 18 72 6 63 12 0 21 0 24 63 0 21 20 9 15 45 0 6 72 5 4
Step-by-step explanation:
This hurt my soul but enjoy
Only 3 of the resorts had a spa
Let,the time taken by larger pipe = x
By smaller pipe = x+5
It would be: 1/x + 1/(x+5) = 9/100
= x+5+x /(x)(x+5) = 9/100
= 2x+5 / x²+5x = 9/100
= 100(2x + 5) = 9(x² + 5x)
= 200x + 500 = 9x² + 45x
= 9x² - 155x - 500 = 0
= 9x² - 180x + 25x - 500 = 0
= 9x(x - 20) + 25(x - 20) = 0
= (9x + 25) (x - 20) = 0
= x = -25/9 or x = 20
Time can't be in negative so -25/9 is rejected.
Now,x + 5 = 20 + 5 = 25
In short, Your Larger pipe takes 20 minutes and smaller pipe takes 25 minutes
Hope this helps!