The formula for the area of a circle is 
So if we have the first one...
≈78.5
Now you can solve the other ones with this formula! Good luck!
Answer:
I believe 25%
Step-by-step explanation:
There are four equally likely outcomes: HH, HT, TH and TT. Of these, one of these match the criterion given ("the first will come up heads and the second tails”). So the probability is 1/4= 25%.
In 4 hours, she read 3 chapters.
In 1 hour, she reads 3/4 chapters.
In 10 hours, she reads 3/4 x 10= 3/2 x 5 = 15/2 = 7 and a half chapters.
Bobby needs to grow at least 1 in to be more than 70 inches tall
The types of items that cost less than $3.75 per item are Paperbacks and notebooks.
<h3>How do we determine the price of a unit item in a word problem?</h3>
The price of a unit item can be determined by dividing the total price by the number of units sold.
Given that:
Paperbacks sold 3 units for $10.65;
- 1 unit will be sold for = $10.65/3 = $3.55
Notebooks sold 4 units for $14.36;
- 1 unit will be sold for = $14.36/4 = $3.59
Puzzles sold 3 units for $11.85;
- 1 unit will be sold for = $11.85/3 = $3.95
Picture frame sold 4 units for $15.20;
- 1 unit will be sold for = $15.20/4 = $3.80
Therefore, from the above calculations, we can conclude that the types of items that cost less than $3.75 per item are Paperbacks and notebooks.
Learn more about calculating the unit price of an item here:
brainly.com/question/5028370
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