Which expression gives the surface area of a sphere with radius r?A. r2
B. 4r3
C. 4r2
D. 4r2

Answers

Answer 1

Answer: The surface area of a sphere is the area of four great circles . . . 4 π r² .

Apparently, either 'C' or 'D' was supposed to be the correct choice,
but the π got lost in the pantry on the way to the printer.

Answer 2

Answer:

Answer:

Area of sphere is given by $4\cdot \pi\cdot r^2$

Step-by-step explanation:

The surface area of sphere is given by:

$\text{Area of sphere}=4\cdot \pi\cdot r^2$

Option C and D are correct but $\pi$ is missing in the options

Option A and B are incorrect.

$\pi=3.14$ to solve the area of sphere when radius is given a constant value.

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Mrs. Stephens drove through a total of 36 intersections on her way home. At 4 of every 16 intersections, she had to stop for a red light before she could drive through. Had how many interceptions did she have to stop for a red light?

What is the geometric mean of 3and 6

Answers

Answer:

The mean is 4.5

Step-by-step explanation:

u add the numbers and divide by how many numbers there are

In the circle graph above, you can see that 47% of the company's monthly income is used to pay the owner's personal salary. If the amount of the owner's personal salary was $2,176.10 this month, what was
the company's total monthly income this month?

Answers

x is the company's monthly income
x*0.47 = 2176.10, owner's salary
solve for x

I need help choosing which multiple choice the answer would be ?

Answers

Add 6 to both sides
So answer B

What can go into 36 and 15

Answers

The number 3 can go to both 36 and 15.
(3 x 12 = 36; 3 x 5 = 15)

3 can go in both numbers evenly

Which of the following numbers has a prime factorization of 2 x 3 x 7?21
48
42
35

Answers

Answer:

Step-by-step explanation:

2 x 3 x 7 = 42

Which shows 522 − 482 being evaluated using the difference of perfect squares method?522 − 482 = (2704 + 2304)(2704 − 2304) = 2,003,200

522 − 482 = (52 + 48)(52 − 48) = (100)(4) = 400

522 − 482 = 2704 − 2304 = 400

522 − 482 = (52 − 48)2 = (4)2 = 16

Answers

52² − 48² = (2704 + 2304)(2704 − 2304) = 2,003,200

52² − 48² = (52 + 48)(52 − 48) = 100 * 4 = 400
a² - b² = (a +b)*(a-b)

52² − 48² = 2704 − 2304 = 400

52² − 48² = (52 − 48)² = (4)² = 16

The optionsecond 52² − 48² = (52 + 48)(52 − 48) = (100)(4) = 400 is the correct.

What is an arithmetic operation?

It is defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has a basic four operators that is +, -, ×, and ÷.

We know,

a² - b² = (a + b)(a - b)

We have:

= 52² − 48²

After using the above identity, we get:

= (52 + 48)(52 - 48)

= (100)(4)

= 400

Thus, the optionsecond 52² − 48² = (52 + 48)(52 − 48) = (100)(4) = 400 is the correct.

Learn more about the arithmetic operation here:

brainly.com/question/20595275

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