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zzz [600]
3 years ago
13

Use the formula c=d and = to find the diameter of this circle whose circumference equals 172.7cm​

Mathematics
2 answers:
Alexandra [31]3 years ago
7 0

Answer:

55cm

Step-by-step explanation:

igomit [66]3 years ago
3 0

Answer

im only in year 9 do you expect me to know that ????????????????????????????

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Can you simplify the below equation<br><br> <img src="https://tex.z-dn.net/?f=%5Csqrt%7B%28%5Csqrt%7B21%7D%20-2%5Csqrt%7B7%7D%29
NemiM [27]

Answer:

nope

Step-by-step explanation:

literally impossible

5 0
3 years ago
Use estimation to help you choose the correct answer.<br><br> 0.945 x 7.6 =
hoa [83]

Remark

The thing you must not do is write 7.182 as your answer. That is the exact answer found using a calculator.


What to do.

What you should do is multiply two rounded numbers together.

7.6 rounded is 8 roughly


0.945 is almost 1.


Your answer is 8*1 = 8 roughly. This skill is very handy when you are writing a test and you want to see if you've done the question correctly. It is easy to misplace a decimal or put in incorrect digits and this is a quick check on things like that.

7 0
3 years ago
Two semicircles are attached to the sides of a rectangle as shown.
melomori [17]

Answer:

157\ in^{2}

Step-by-step explanation:

we know that

The area of the figure is equal to the area of rectangle plus the area of two semicircles

<u>The area of rectangle is equal to</u>

A=14*5=70\ in^{2}

<u>The area of the small semicircle is equal to</u>

A=\pi r^{2} /2

r=5/2=2.5\ in -----> radius is half the diameter

substitute

A=(3.14)(2.5^{2})/2=9.8125 in^{2}

<u>The area of the larger semicircle is equal to</u>

A=\pi r^{2} /2

r=14/2=7\ in -----> radius is half the diameter

substitute

A=(3.14)(7^{2})/2=76.93\ in^{2}

The area of the figure is equal to

70+9.8125+76.93=156.7425=157\ in^{2}

8 0
3 years ago
Read 2 more answers
The Empire State Building is just over 1,450 feet tall. In anticipation of visiting this landmark on your vacation, you create a
oee [108]
You have two given data available here: the actual height of the Empire State Building measuring 1,450 feet, and the height of the block measuring 2 feet. To find how many blocks stacked together would make up 1,450 feet, just divide 1,450 by 2.

Number of blocks=1,450 feet * (1 block/2 feet)
Number of blocks = 725 blocks

Therefore, you would use a model  requiring 725 blocks. The scale factor for the model is 1 block per two feet. 
3 0
3 years ago
Read 2 more answers
The sum of the square of the number and a second number is 42
AveGali [126]

Step-by-step explanation:

x+x squared =42. The square of the number is the number square. By my incredibly accurate guess and check strategy (works most of the time )6*6 = 36+6=42

3 0
3 years ago
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