All categories

4 years ago

Please Help! image below

Mathematics

1 answer:

sweet-ann [11.9K]4 years ago

6 0

Answer:

A = 81π cm²

Step-by-step explanation:

The area (A) of the cross section is calculated as

A = πr² ( r is the radius )

Find r by using the given circumference.

Given the circumference is 18π and circumference (C) is

C = 2πr = 18π ( divide both sides by 2π )

r = 9, thus

A = π × 9² = 81π cm²

You might be interested in

The container that holds the water for the football team is 1/5 full. After pouring in 7 gallons of water, it is 7/10 full. How

alexandr402 [8]

14 gallons I believe
Let me know if this helped!

3 0

3 years ago

Explain the process of changing rational exponents to radical form

hoa [83]

The formula that describes the transformation of rational exponents to radical form is:

$a^{\frac{n}{m}} = \sqrt[m]{a^n}$

<h3>Transformation of rational exponents to radical form:</h3>

A rational exponent is represented by: $a^\frac{m}{n}$ .

That is, the exponent is a fraction, in which m is the numerator and n is the denominator.

In the conversion to radical form, the numerator will be power(also exponent), while the denominator will be the root.

Hence, the formula for the transformation is:

$a^{\frac{n}{m}} = \sqrt[m]{a^n}$

You can learn more about the transformation of rational exponents to radical form at brainly.com/question/7296346

3 0

3 years ago

Identify the one number that comes next in the set: 5, 12..

NikAS [45]

the answer is seventeen

5 0

3 years ago

Read 2 more answers

Please help! worth 20<br> points!

Korolek [52]

I think it is choice C

8 0

3 years ago

One train traveled south at 60 mph. The other traveled east at 50 mph. How far apart were the trains after 3 hours?

Vlad [161]

<span>Let's called the train that traveled south train A, and the train that traveled east train B

After 3 hours, train A is 180 miles South
and Train B is 150 miles East

Using Pythagoras, distance between is sqrt(180^2 + 150^2)
30 sqrt(6^2 + 5^2) = 30sqrt(36 + 25) = 30sqrt 61 = 234.307 miles</span>

6 0

3 years ago