What is the surface area of a cylinder with base radius 2 and height 9? Either enter an exact answer in terms of or use 3.14 for and enter your answer as a decimal.

square units

answer for #1 is c

answer for #2 is d

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b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation:

6 and 24

step-by-step explanation:

6 x 4 = 24