The circumfrence of a circle is 16TT

Answers

Answer 1

Answer: The formula for a circumference of a circle is: C=2πr
and we are given the answer as
C=16π

Therefore we know that 16 is from the combination of multiplying 2 and r
So to find r we do the opposite of what is done. The opposite of multiplying is dividing, therefore:
16/2=8
therefore r = 8

The formula for the area of a circle is: A=πr^2
Since we know r = 8 we just sub it into the equation

A=π*8^2
A=64π or (assuming you want π to two decimal places: 3.14 then) 200.96

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A rope 29 ft long rope is tied to the top of a flag pole. The rope is staked to the ground 21 ft away from the base of the pole. How tall is the flag pole?

Answers

Answer: 20 ft

Step-by-step explanation:

Given: The length of rope tied to the top of a flag pole=29 ft

The distance between base of the pole and the point on ground where the rope is stacked= 21 ft

Let x be the height of flagpole.

Now, we can see the figure that the given situation represents a right triangle

Where longest side= 29

By Pythagoras theorem of right triangle, the square of the longest side is equal to the sum of the squares of the other two sides.

$29^2=21^2+x^2\n\Rightarrow\ x^2=29^2-21^2\n\Rightarrow\ x=841-441\n\Rightarrow\ x=400\n\Rightarrow\ x=√(400)\n\Rightarrow\ x=20$

Hence, the height of flagpole = 20 ft.

It's like A2+B2=C2 so:
A2+B2=C2
A2+ 21(squared)=29(squared)
A2=441=841
A2=400
A=√(400)
A=20

What equation can be used to find n, the number of nickels in the collection ?

Answers

Given, Bodhi has a collection of 175 dimes and nickel. If she has n numbers of nickel. Then,

The number of dimes coin= 175-n.

The collection is worth $13.30.

1 nickel is worth five cents. So, n nickel will worth 0.05n.

Similarly 1 dime is worth 10 cents. So, 175-n dimes will worth 0.1(175-n).

Since the total worth is $13.30. So, we can set the equation as follows:

0.1(175-n)+0.05n=13.13.

Hence, the last option is the correct choice.

Rico and Darla each measured a side and height on the triangle below to find its area. Rico’s side measured 7.5 m and Darla’s side measured 9 m.Choose True or False for each

Answers

Answer:

1 true. 2 false. 3 true. 4true.

Step-by-step hope it helps if I'm to later well f it

Answer:

True false true false

Step-by-step explanation:

Is the greatest product of a 3 digit number & a 1 diget number is 8,891 ?

Answers

No, because 999 x 9 = 8,991.

Not 8,891.

What are two equivalent fractions for 2/10, three equivalents fractions for 3/11 and three equivalent fractions for 1/12?

Answers

Well, $(2)/(10)=(1)/(5)=(3)/(15)=(4)/(20)=(5)/(25)=(n)/(5n)$ for every n integer.
$(3)/(11)=(6)/(22)=(9)/(33)=(12)/(44)=(15)/(55)=(3n)/(11n)$ for every n integer.
$(1)/(12)=(2)/(24)=(3)/(36)=(4)/(48)=(5)/(60)=(n)/(12n)$ for every n integer.

2/10 is equal to 1/5 cause u divide by 2 and 4/20 cause u divide by 2.for 3/11 r 6/22 cause multiply by 2 and 9/33 cause u multiply by3 finally 1/12 r 2/24 cause u multiply by 2 and 3/36 cause u multiply by 3

What value of y will make the equation true?

√34 x √y =34