Answer:
12. $65.90, 13. 36.04cm
Step-by-step explanation:
12. the circumference of the circle is 2pi*r. lets say x is the circumference so x = 2*pi*3.8 = 23.876m. multiply x by 2.76 to get 65.898, round to get 65.90
13. the area of a circle is pi*r^2. the area of the pizza is 12*85=1020cm^2. divide by pi to get 324.676 cm^2. then find the square root to get r=18.019 cm. the diameter = 2r so multiply by 2 to get 36.038cm. I'm not sure what the problem wants to round to so you can round it yourself.
note: for these two problems i used the full pi instead of 3.14. using 3.14 will give you a different answer so it just depends. If the problem wants you to use 3.14, simply resolve the problems and use 3.14 instead of pi wherever required.
$60 times 4 hours = $240
Tip is added to that total.
240X.10 = $24
240+24 = $264
The answer is True.
You have to derive the distance formula from the Pythagorean theorem.
Answer:
$15.30
30% of 60 is 18
Step-by-step explanation:
To find the maximum amount he can spend on a meal, you have to find how much he is going to tip.
So to find the tip you multiply 15% by 18 and you get 2.7
Then you subtract 18 by 2.7 to find out how much he can spend on the meal.
18 - 2.7 = 15.30
So he can spend $15.30 on his meal and tip $2.70
To find what percent of 60 is 18, you have to use this equation:
is over of equals percent over 100
So is/of = x/100 We have the x as the percent because that's what you're trying to figure out.
You would put 18 as is because it has the word is before it and put 60 as of because it has of before it.
So 18/60 = x/100
Now you would do Cross Product Property
18*100 = 1800
60*x = 60x
60x = 1800
Now divide 60 by itself and by 1800
1800/60 = 30
x = 30%