I need help with number 19-21 I don't get it.
19. Workpad
Note: In questions 19-21, remember to show all of the steps that you use to solve the problem. Be sure to use the text box where the question mark (?) first appears to show your mathematical work. You can use the comments field to explain your work. Your teacher will review each step of your response to ensure you receive proper credit for your answer.
Find the area for the circle (use 3.14 for pi). Show your work. Round to the nearest tenth.
In the circle there is a line from the right side and stops at a red dot in the middle. It shows at the top 23 yd.
20. Find the circumference of the circle (use 3.14 for pi). Show your work. Round to the nearest tenth.
In this one there is a circle that regulates the same description to number 19.
21. Find the area of the irregular figure (use 3.14 for pi). Show your work. Round to the nearest tenth.
This question has a triangle and some shape that is a circle almost and a has a line underneath (I am sorry of you're confused I don't know how to explain it) on the triangle there is a line through it and it says 4.8 ft. On the other shape (the one I couldn't explain) it says 3.6 ft.
Please help me out I am not good at math I need some explanation please go through it step by step so I get a better understanding and please no rude comments I am a slow learner. But if you could please explain this to me thank you.
It would be on top of in in 21 and it is side ways, they both have labels one of the numbers for the triangle is sideways but the circle almost but not fully has a number breaching on the top.
Sure, I'd be happy to help you understand these problems step by step. Let's start with question 19.
19. Find the area for the circle.
To find the area of a circle, we use the formula: A = πr^2, where A represents the area and r is the radius of the circle. In this question, we have a line that stops at a red dot in the middle, and it shows that the diameter of the circle is 23 yd. The radius is half the diameter, so the radius of the circle would be 23 yd / 2 = 11.5 yd.
To find the area, substitute the value of the radius into the formula: A = π * (11.5 yd)^2.
Now, calculate the area using the value of π as 3.14: A = 3.14 * (11.5 yd)^2.
Simplify the calculation: A = 3.14 * 132.25 yd^2.
Multiply the values: A ≈ 414.31 yd^2 (rounded to the nearest tenth).
So, the area of the circle is approximately 414.31 square yards.
Now, let's move on to question 20.
20. Find the circumference of the circle.
The circumference of a circle can be found using the formula: C = 2πr, where C represents the circumference and r is the radius of the circle.
In this question, we already know the radius from the previous question, which is 11.5 yd. Substitute the value of the radius into the formula: C = 2 * 3.14 * 11.5 yd.
Now, calculate the circumference: C = 2 * 3.14 * 11.5 yd.
Simplify the calculation: C ≈ 72.22 yd (rounded to the nearest tenth).
So, the circumference of the circle is approximately 72.22 yards.
Lastly, let's move on to question 21.
21. Find the area of the irregular figure.
In this question, there is a triangle and another shape that you're unable to explain. Let's calculate the areas of these two shapes separately and then add them together to find the total area.
First, let's find the area of the triangle. We are given that the line through the triangle measures 4.8 ft. The formula for the area of a triangle is: A = 1/2 * base * height.
Substitute the given values into the formula: A = 1/2 * 4.8 ft * height.
Unfortunately, you haven't provided the height of the triangle, so we can't calculate the exact area without that information. If you have the height of the triangle, please provide it so we can proceed with the calculation.
As for the other shape you mentioned, it seems like a circle with a length of 3.6 ft. If you need to find the area of this shape, we can use the formula discussed in question 19: A = πr^2. Please confirm if this is the shape you are referring to and if you would like to calculate its area.
I hope this helps! If you have any further questions, please let me know.
Sure, I can help you understand and solve questions 19-21 step by step.
19. To find the area of a circle, you can use the formula: A = πr², where A represents the area and r represents the radius of the circle. In this question, you are given the diameter of the circle as 23 yards.
To find the radius, divide the diameter by 2: r = 23 yards / 2 = 11.5 yards.
Now, substitute the value of the radius into the formula: A = 3.14 * (11.5 yards)².
Simplifying the equation: A = 3.14 * 132.25 yards².
Finally, calculate the area: A ≈ 414.26 square yards (rounded to the nearest tenth).
20. The circumference of a circle can be found using the formula: C = 2πr, where C represents the circumference and r represents the radius of the circle. Since the radius remains the same as in question 19 (11.5 yards), you only need to substitute the value into the formula: C = 2 * 3.14 * 11.5 yards.
Calculating the circumference: C ≈ 72.26 yards (rounded to the nearest tenth).
21. To find the area of an irregular figure, you need to determine the individual areas of the triangle and the other shape and then add them together.
Start with the triangle: The formula for the area of a triangle is A = 0.5 * base * height. In this case, the base is the line through the triangle, which measures 4.8 feet, and the height is the distance between the base and the top of the triangle. Unfortunately, the height is not provided in the question, so it cannot be solved.
Moving on to the other shape you couldn't explain: From the information given, it seems like you have a circle-like shape with a line underneath. We can assume it is a semicircle (half of a circle).
To find the area of a semicircle, you can use the formula: A = 0.5 * π * radius². In this case, the radius is given as 3.6 feet.
Substituting the value of the radius into the formula: A = 0.5 * 3.14 * (3.6 feet)².
Simplifying the equation: A = 0.5 * 3.14 * 12.96 square feet.
Finally, calculate the area: A ≈ 20.38 square feet (rounded to the nearest tenth).
Unfortunately, since we couldn't determine the height of the triangle, we cannot calculate the exact area of the irregular figure.
#19 sounds like the circle has a radius of 23 yd.
So, its area is πr^2 = 529π
#20. C = 2πr = 46π
#21. You're going to have to do better than that. Is the "circle almost" inside the triangle, resting on top of it, or what? Is the flat side of the almost-circle where the label is? Is the triangle's side length labeled? Where is the "line through it"?