All categories

2 years ago

How many inches around is the border if the diameter of the pizza is 8 inches?

Mathematics

1 answer:

fenix001 [56]2 years ago

6 0

Answer:

25.12

Step-by-step explanation:

Since it says <u><em>around</em></u> the pizza, we can assume it means circumference.

So, the formula to find circumference is C=2πr.

We have a diameter which is 8. We know that radius is half of the diameter. So, half of 8 is 4.

Now that we have the radius we can plug in the numbers for the formula C=2πr.

C=2πr

C=2*3.14*4

C=25.12

your answer is 25.12 inches.

You might be interested in

A circular pond is modeled by the equation x^2 + y^2= 225. A bridge over the pond is modeled by a segment of the equation x – 7y

serious [3.7K]

$x^2+y^2=225 \\
x-7y=-75 \\ \\
\hbox{solve the second equation for x:} \\
x-7y=-75 \ \ \ |+7y \\
x=7y-75 \\ \\
\hbox{substitute 7y-75 for x in the first equation:} \\
(7y-75)^2+y^2=225 \\
49y^2-1050y+5625+y^2=225 \\
50y^2-1050y+5625=225 \ \ \ \ \ \ \ \ \ |-225 \\
50y^2-1050y+5400=0 \ \ \ \ \ \ \ \ \ \ \ \ |\div 50 \\
y^2-21y+108=0 \\
y^2-9y-12y+108=0 \\
y(y-9)-12(y-9)=0 \\
(y-12)(y-9)=0 \\
y-12=0 \ \lor \ y-9=0 \\
y=12 \ \lor \ y=9$

$x=7y-75 \\
x=7 \times 12 -75 \ \lor \ x=7 \times 9-75 \\
x=84-75 \ \lor \ x=63-75 \\
x=9 \ \lor \ x=-12 \\ \\
(x,y)=(9,12) \hbox{ or } (x,y)=(-12,9)$

The points are (9,12) and (-12,9).
The answer is A.

7 0

3 years ago

What is 25 x 10^6 I need to know fast

Verizon [17]

Answer:

25000000

Step-by-step explanation:

First you get rid of your exponents so 10^6 = 1000000 then multiply 25 and get 25000000

6 0

3 years ago

Another one for yall

evablogger [386]

2 solutions

As there are 2 variables namely x and y.

No solution

a1/a2=b1/b2 $\neq$ c1/c2

Option A

multiply 2 with eq(1) and 1 with eq(2)

Option D

Multiply 2 with eq(2)

5 0

3 years ago

On a certain river, a paddleboat travels 12 miles upstream (against the current) in the same amount of time it travels 20 mil

marin [14]

Given :

a paddle boat travels upstream = 12 miles

a paddle boat travels downstream = 20 miles

speed of the current = 2 miles per hour

Let the speed of the boat =x

Let the time taken = t

We know the distance for upstream D= (boat speed - current speed) * time

the distance for downstream D= (boat speed + current speed) * time

Plug in all the values and variables in the distance

For upstream 12 = (x-2)t, then $t = \frac{12}{x-2}$

For downstream 20 = (x+2)t then $t = \frac{20}{x+2}$

we got two equations for t, equate it and solve for x

$\frac{12}{x-2} = \frac{20}{x+2}$

Cross multiply it

12(x+2) = 20(x-2)

12x + 24 = 20x - 40 (subtract 12x and add 40 on both sides)

64 = 8x

x= 8

the speed of the boat in still water = 8 miles per hour

3 0

3 years ago

Read 2 more answers

PLS HELP ME

eimsori [14]

Answer:

5.5

Step-by-step explanation:

2,3,3,4,5,7,8,8,8,10,10,12

The mean of this data is 7.5. So what you are trying to figure out is the mean between 2 and 7. Since that is 3 and 4 it would be 3.5. So 3.5 is the Q1. Now you have to figure out the mean between 8 and 12. That is 9. This is Q3. You have to subtract 9-3.5 and that is the interquartile range. So 5.5 is the answer. I hope that made sense.

6 0

2 years ago