All categories

2 years ago

Find the circumference of a circle whose area is equal to 64π^2

Mathematics

1 answer:

PilotLPTM [1.2K]2 years ago

7 0

Answer:

14 6/7 is the circumference

Step-by-step explanation:

you first of all look for the radius using the formulae multiply both sides by the reciprocal of 22/7

7/22 ×22/7r=64×7/22=224/11{2 4/11)

2 4/11 is the radius

cir =2×22/7×2 4/11

2×22/7× 26/11=104/7

==== =14 6/7

all i can do but am not sure sorry

You might be interested in

I need help!!!!!! With a b c and d

AleksAgata [21]

What grade are you in

3 0

4 years ago

A certain restaurant offers 6 kinds of cheese and 2 kinds of fruit for its dessert platter. If each dessert platter contains an

max2010maxim [7]

<h3>27 different dessert platters can be offered by restaurant</h3>

Solution:

Given that,

A certain restaurant offers 6 kinds of cheese and 2 kinds of fruit for its dessert platter

Each dessert platter contains an equal number of kinds of cheese and kinds of fruit

For this problem there are two scenarios:

1 ) one cheese and one fruit

2 ) two cheese and two fruit

For one cheese and one fruit

$6C_1 \times 2C_1$

Use the combination formula

$C(n, r) = \frac{n !}{r ! (n-r) ! }$

Where, n is total items and r is the items being chosen at a time

$6C_1 \times 2C_1 = \frac{ 6 ! }{ 1 ! (6 - 1) ! } \times \frac{ 2 ! }{ 1 ! ( 2 -1 ) ! }\\\\6C_1 \times 2C_1 = \frac{ 6 ! }{ 1 ! 5 ! } \times \frac{ 2 ! }{ 1 ! 1 ! }\\\\6C_1 \times 2C_1 = \frac{ 6 \times 5 \times 4 \times 3 \times 2 \times 1}{ 5 \times 4 \times 3 \times 2 \times 1} \times 2 \times 1\\\\6C_1 \times 2C_1 = 6 \times 2 = 12$

For 2 cheese and 2 fruits

$6C_2 \times 2C_2$

$6C_2 \times 2C_2 = \frac{ 6 ! }{ 2 ! ( 6 - 2) ! } \times 2C_2\\\\We\ know\ that\ 2C_2 = 1\\\\6C_2 \times 2C_2 = \frac{ 6 ! }{ 2 ! ( 6 - 2) ! } \times 1\\\\6C_2 \times 2C_2 = \frac{ 6 \times 5 \times 4 \times 3 \times 2 \times 1 }{2 \times 1 \times 4 \times 3 \times 2 \times 1 }\\\\6C_2 \times 2C_2 = 15$

So, total ways = 12 + 15 = 27

Thus, 27 different dessert platters can be offered by restaurant

5 0

4 years ago

Solve the following equation for y, and the identify the slope of the line:9x-3y=15

Gre4nikov [31]

9x-3y=15
-3y=15-9x
y=-5+3x
Slope is -5

8 0

4 years ago

What is the present value of an investment that will pay you $97,000 in four years. assume the appropriate discount rate is 7.75

frutty [35]

Total = Principal * (1 + (rate/n))^n*years
where "n" is the number of compounding periods per year (in this case it is 365)
Total = 97,000 * (1.0002123288)^365*4
Total = 97,000 * (1.0002123288)^1,460
 =132,247.89 

Source: Compound Interest Formulas:
http://www.1728.org/compint3.htm

8 0

3 years ago

Which statement is true about point Y?

Viefleur [7K]

Answer:C

Step-by-step explanation:

3 0

4 years ago

Find the circumference of a circle whose area is equal to 64π^2​

Find the circumference of a circle whose area is equal to 64π^2