He radius of a circle is 4.7 inches. find the circumference and area of the circle. use π = 3.14. round to the nearest hundredth.

plz show your work/ you

Step-by-step explanation: To find the area of a circle, start with the formula for the area of a circle.

Since the radius of the circle is 4.7 inches, we can plug 4.7 in for the radius in our formula.

Remember that 4.7 in.² is equal to 4.7 inches × 4.7 inches or 22.09 in.².

Now, remember that pi is approximately equal to 22/7 or 3.14. This means that we can estimate the area of the circle by plugging in 3.14 for pi.

Area = 69.36 in.²

Now, let's find the circumference of the circle. To find the circumference of a circle, start with the formula for the circumference.

Circumference = 2πr

Notice that our radius is 4.7 inches which means we can plug in 4.7 inches for the radius in our formula.

Circumference = (2) (π) (4.7 in)

Circumference = 9.4π inches

Step-by-step explanation:

The formula of a circumference of a circle:

r - radius

The formula of an area of a circle:

We have r = 4.7 in.

Substitute:

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.

click to let others know, how is it

0.0

0 votes

1

report

read more on -

step-by-step explanation: