Hi there!
Using the equation for the area of a circle, we can simply substitute pi with its numerical value of 3.14 and r with the radius given.
1.) Area = (3.14)(6cm)² = 113.0 cm²
2.) Area = (3.14)(28in)² = 2461.8 in²
3.) To find radius, first we must divide the diameter in half. So, 11/2 = 5.5 ft
Area = (3.14)(5.5ft)² = 95 ft²
4.) Similar to 3, to find radius, first we must divide the diameter in half. So, 10.5/2 = 5.25 in
Area = (3.14)(5.25in)² = 86.5 in²
5.) Area = (3.14)(6.3mm)² = 124.6 mm²
6.) Area = (3.14)(3
yd)² = 33.2 yd²
26 percent of 50 is 13
50-13 is 37
Answer:To get the solution, we are looking for, we need to point out what we know.
1. We assume, that the number 1220 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 1220, so we can write it down as 100%=1220.
4. We know, that x% equals 792 of the output value, so we can write it down as x%=792.
5. Now we have two simple equations:
1) 100%=1220
2) x%=792
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=1220/792
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.
7. Solution for 792 is what percent of 1220
100%/x%=1220/792
(100/x)*x=(1220/792)*x - we multiply both sides of the equation by x
100=1.540404040404*x - we divide both sides of the equation by (1.540404040404) to get x
100/1.540404040404=x
64.918032786885=x
x=64.918032786885
now we have:
792 is 64.918032786885% of 1220
Step-by-step explanation:
Answer:
Step-by-step explanation:
3rd grade:
Number of girls = 16
Number of boys = 15
Total number of students = 31
4th grade:
Number of girls = 15
Number of boys = 18
Total number of students = 33
Formula for probability of an event <em>E</em> can be observed as:
Probability of picking a boy from <em>3rd grade</em>, 
Probability of picking a boy from <em>4th grade</em>, 
These are two independent events of picking a boy from 3rd grade and 4th grade.
So, probability the captain chooses 2 boys in the first pick can be found by multiplying (1) and (2) above.
Correct answer is c to the question
