What is the surface area of the sphere?

The surface area of the sphere is 314 mi².

Step-by-step explanation:

According to the given diagram, the diameter of the sphere is 10 mi.

If the radius is , then diameter

So....

Formula for the surface area of a sphere:  

Plugging the value of into this formula, we will get...

So, the surface area of the sphere is 314 mi².

the answer is a i belaeve atleast thats what my calculator just gfave me

step-by-step explanation:

hello,

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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