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Lapatulllka [165]
2 years ago
10

What is the surface area of a sphere with radius 2?

Mathematics
1 answer:
VladimirAG [237]2 years ago
8 0

\textit{surface area of a sphere}\\\\ SA=4\pi r^2~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ r=2 \end{cases}\implies \begin{array}{llll} SA=4\pi (2)^2\implies SA=16\pi \\\\\\ SA\approx 50.27 \end{array}

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Please huryyyyyyyyy please helpppppp
Marrrta [24]

The square root of integers where one can get the number 2.71 will be between 7 and 8.

The square root of integers where one can get the π will be between 9 and 10

<h3>How to illustrate the value?</h3>

It should be noted that the <em>square</em> of a number simply means multiplying the number by itself.

Therefore, the.square root of integers where one can get the number 2.71 will be between 7 and 8.

Also, the square root of integers where one can get the π will be between 9 and 10

Learn more about computations on:

brainly.com/question/4658834

#SPJ1

5 0
1 year ago
If y= -3, then 4+y/4y
Makovka662 [10]

Answer:

B

Step-by-step explanation:

if y = -3 then 4+(-3)/4(-3) would be 4-3 = -1 over -12 so -1/-12 or 1/12 -->B

3 0
2 years ago
What is the lowest common multiple of 3 and 4
Rufina [12.5K]

So an example


least common multipule is like what is the smallest number both will fit into


example, 6 and 10, least common multilule is 30 because 6*5=30 and 3*10=30


so 3 and 4

factor each

3=3

4=2*2

so we have to have 2*2*3 which is 12


12 is least common multiplule


7 0
3 years ago
if an external point of a circle is at a distance equal to the diameter of the circle from the center of the circle, the length
jeka57 [31]

Let the radius of the circle be r. Then the line from the external point through the center of the circle which extends to the far point on the circle has length 3r .By the tangent - secant theorem

t^2 = 3r * r = 3r^2 ( where t is the length of the tangent).

So t = √(3r^2) = √3r answer.

7 0
3 years ago
The system of equations can be solved using linear combination to eliminate one of the variables. 2x − y = −4→10x − 5y = −20 3x
tester [92]

Answer:

Option D is correct.

13x = 39

Step-by-step explanation:

The system of equation is given:

2x-y = -4             ....[1]

3x+5y = 59         .....[2]

Multiply equation [1] by 5 to both sides we have;

10x-5y = -20              .....[3]

Using elimination method:

Add [2] and [3] equations to eliminate y and solve for x, we have;

13x = 39

Divide both sides by 13 we get;

x = 3

Substitute x in [1] we have;

2(3)-y = -4

6-y = -4

Subtract 6 from both sides we have;

-y = -10

Divide both sides by -1 we have;

y = 10

⇒Solution: (3, 10)

Therefore, an equation can replace 3x+5y = 59 in the original system and still produce the same solution is,

13x = 39

6 0
3 years ago
Read 2 more answers
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