![karatekats1](/avatars/4771.jpg)
karatekats1
04.01.2021 •
Mathematics
PLEASE PLEASE ANSWER THIS FOR ME I REALLY NEED TO UNDERSTAND IT
"FIND THE COLOURED AREA IN THE FOLLOWING SHAPES"
HELP PLEASE
Solved
Show answers
More tips
- F Food and Cooking Discover the Benefits and Properties of Dates...
- C Computers and Internet Dynamically Assigned IP Address: What Is It and How Does It Work?...
- H Health and Medicine Angina: Causes, Symptoms, and Treatment...
- C Computers and Internet How to Learn to Type Fast?...
- F Food and Cooking Delight for Gourmets: How to Prepare Liver Pate...
- S Style and Beauty How to braid friendship bracelets?...
- H Health and Medicine Mercury Thermometer Danger: What to do when a thermometer breaks?...
- F Food and Cooking Which Calamari Salad is the Most Delicious?...
- S Society and Politics 10 Tips for Boosting Your Self-Esteem...
- F Food and Cooking The Most Delicious and Simple Fish in Batter Recipe...
Answers on questions: Mathematics
- M Mathematics Suppose that the length of time required to run a maintenance check and to service an automobile has a mean value of 2 hours and standard deviation of 0.6 hour. Suppose...
- M Mathematics Plot the function given below on the provided graph. y = 2|x+ 2 |+ 3...
- M Mathematics The value of business furniture is assumed to depreciate (decrease) in value linearly. If the value was $56,000 in 2012 and $48,500 in 2015, when will the value be $20,000?...
- M Mathematics The nieces is it a ladder to clean the outside of her second-story windows the lashes is it is 24 feet long and she puts the base of the lead 13 feet away from the house...
- M Mathematics Approximately 26% of all pipework failures in chemical plants are caused by operator error. What is the probability that out of the next 30 pipework failures, at least...
- M Mathematics An urn contains twelve chips - four red, three black, and five white. A sample size 4 is to be drawn without replacement. Let X denote the number of white chips in the...
- M Mathematics Ask Your Teacher The world population in 2016 was estimated to be 7.4 billion people, and it is increasing by about 1.1% per year. Assume that this percentage growth...
- M Mathematics C(x) = 100x + 1400 and R(x) = 80x The break-even quantity is __ units...
- M Mathematics Distribute and combine √12x(-1+√5...
- M Mathematics 3x+⅝ 4x-½ select from the drop down menus to correctly justify each step....
Ответ:
See answers below for explanations (answers are in bold)
Step-by-step explanation:
Problem 1 (Top left):
Assuming that the shape is an ellipse, we will use the formula A=πab where a and b are both half the major and minor axis respectively. Since a=9 and b=6, then we have A = π(9)(6) = 54π = 169.646 units^2 as our final answer
Problem 2 (Top right):
Again, we use the same equation as in Problem 1 but this time, a=12 and b=8, so we then have A = π(8)(12) = 96π = 301.593 units^2 as our final answer
Problem 3 (Bottom left):
We can make this irregular shape into a half-ellipse and a rectangle. We would find their separate areas and add them up. The area of the half-ellipse would be A=1/2πab. The value of "a" would be 13.8/2=6.9 since that's the length of the rectangle. The value of "b" would be 3.5, so that means the area of the half-ellipse would be A = 1/2(π)(6.9)(3.5) = 12.075π = 37.935 units^2. The width and length of the rectangle are 5.4 and 13.8 respectively, so this means the area of the rectangle is 5.4*13.8 = 74.52 units^2. Combining both areas, we get 37.935+74.52 = 112.455 units^2 as our final answer
Problem 4 (Bottom right):
This irregular shape is an ellipse, but a circle is missing from its center. Thus, we must find the area of the circle and ellipse and then subtract the circle's area from the ellipse's area. For the area of the ellipse, a=(15.5/2)=7.75, and b=(7/2)=3.5, making its area A = π(7.75)(3.5) = 27.125π = 85.216 units^2. The area of a circle is A=πr² where "r" is the radius. The radius would be 7/2=3.5, making the circle's area A = π(3.5²) = 12.25π = 38.485 units^2. This means that the shaded area is 85.216-38.435 = 46.781 units^2
Ответ:
C is the answer\
Step-by-step explanation: