All categories

3 years ago

If a circle has a circumference of 81.64 cm, what is the radius?

Mathematics

2 answers:

ipn [44]3 years ago

8 0

Answer:13cm

Step-by-step explanation:

Over [174]3 years ago

8 0

Answer:

c = Circumference=pid= 81.64 To find the radius of a circle you can just divide the diameter by 2.

pi = 3.14

d = diameter=c/3.14 Pi is always 3.14 or 22/7.

d = 81.64/3.14

d = 26

r= radius= 26/2

radius=13 cm

Step-by-step explanation:

You might be interested in

Identify the a b and c values of the following quadratic expression 4x^2+5x=4

yarga [219]

A is the 4

B is the 5

and C is also 4.

A is always the number in front of x^2. B is always the number i front of the normal x, and C is the number that is on the other side of the equal sign!

6 0

3 years ago

Find the values of x when y=1

kirill [66]

Answer:

$x=1+\sqrt{5}, 1-\sqrt{5}$

Step-by-step explanation:

$x^{2} -2x-4=0$
$(x-1)^{2} -1-4=0$
$(x-1)^{2} -5=0$
$(x-1)^{2} =5$
$x-1=\sqrt{5} ,-\sqrt{5}$
$x=1+\sqrt{5} , 1-\sqrt{5}$

FINAL ANSWER

$x=1+\sqrt{5} , 1-\sqrt{5}$

In Decimal Form (Rounded to 3 significant figures)

x≈-1.24, 3.24

6 0

4 years ago

Read 2 more answers

the length of a rectangle is 5ft more than twice the width and teh area of the rectabgle is 42ft squared. what are the dimension

lara [203]

The width is 3.5 and the length is 12

4 0

3 years ago

Two months later,The Jensen family takes their moms sedan on a different trip.When she fills the tank,Sally’s mom records the mi

riadik2000 [5.3K]

Answer:

18.04 gallons

Step-by-step explanation:

The cost of filling the empty tank of the vehicle is $71.98.

If each gallon of gas costs $3.99, then we have to find the volume of the sedan's tank in gallons.

Now, $3.99 is the cost of 1 gallon of gas.

Hence, $71.98 will be the cost of $\frac{71.98}{3.99} = 18.04$ gallons.

Therefore, the volume of the tank is 18.04 gallons. (Answer)

8 0

3 years ago

A sales person earns $80 for every computer he sells. He earns an additional $250 for every 10 computers he sells that month. Ho

Georgia [21]

Answer

23 computer

Step-by-step explanation:

if he sold 20 computers he would make 2100 which then he would need 240 more dollars to reach his goal and to find the answer you would then divide 240 by 80.

4 0

3 years ago