Circumerence=2pir or dpi were r=radius and d=diameter
11pi=2pir
divid eobt sides by pi
11=2r
dvide 2
5.5=r
11pi=dpi
divide both sides by pi
11=d
diameter=11in
radius=5.5 in
To find the amount needed to build the fence you would first need to find the perimeter of the rectangle. Which the formula is P=2(l+w).
Then you plug in your numbers into the formula and you’ll get P=2(90.66+45.5)
Then you can do the math or type it into a calculator and you’ll get 272.32................Then just leave the numbers after the decimal out and 272 should be your estimated answer
Answer:
Class 7A collected 4.8 ounces of pure gold.
Step-by-step explanation:
<u>Key skills required are: Percentages, Multiplication</u>
<u />
- We only need the information about Class 7A. They collected 40 oz that contains 12% gold.
- In other words, this means that 12% of that 40 oz gold sand is pure gold.
Here we have to do 12% x 40 to find the number of oz of pure gold. We first have to convert 12% into a decimal. Divide it by a 100 (or move the decimal point 2 places to the left) and you will get 0.12.
<em>Do 0.12 x 40 and you will get 4.8</em>
Therefore, there are 4.8 oz of pure gold in Class 7A's gold sand
Answer:
$15.679216
Step-by-step explanation:
new sp = 80% of cp
= 0.8 x 199.99
= 159.992
new sp2 = 120% of cp2
= 1.2 x 159.992
÷ 191.9904
new sp3 = 80% of cp3
= 0.8 x 191.9904
= 153.59232
new sp4 = 120% of cp4
= 1.2 x 153.59232
= 184.310784
difference = 199.99 - 184.310784
=15.679216
The answer is false.
There are only for operations for arithmetics.
Addition. Subtraction. Multiplication. Division.
Hope I helped!
-CSX
