If the radius of a circle is doubled, by what factor will the area change? 2r
Question:
If the radius of a circle is doubled, by what factor will the area change?
2r
Step by Step Answer:
Let r radius of circle Then 2r radius o...View the full answer
College Algebra
ISBN: 978-0134697024
12th edition
Authors: Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Related Video
The area of a circle is given by the formula: A = ?r^2 Where A is the area, ? is a mathematical constant (approximately 3.14), and r is the radius of the circle. The radius is the distance from the center of the circle to the edge. So for example, if the radius of a circle is 5 units, the area would be: A = ?(5^2) = ?(25) = 78.5 square units Here three friends went out to a restaurant and decided to have pizza for lunch. While they were waiting for their order, one of them stepped out to take a call but promised to return in two minutes. The waiter came and presented them with the menu, and they decided to order two 10-inch pepperoni pizzas. The waiter took their order and left. Just then, the third friend returned and asked what they had ordered. They explained that they had ordered two small pepperoni pizzas as they were only three of them and it would be enough for them. However, the third friend suggested that for the same price, they could get a large pizza that would be much bigger than the two small ones. He asked the waiter for a pen and paper and proceeded to calculate the area of the two small pizzas and compared it to the area of one large pizza. The friends were amazed at how the circle measurements worked and decided to change their order from two small pizzas to one large pizza.
Students also viewed these Mathematics questions
-
The diameter of a circle is twice its radius, as shown in the Exercise 91 illustration. If the radius of a circle is 7/20 of a foot, what is its diameter?
-
Solve the equation. Give solutions in exact form. log 3 (x + 1) - log 3 (x - 3) = 2
-
The amount of a certain radioactive material, in grams, present after t days is modeled by A(t) = 600e -0.05t . (a) Find the amount present after 12 days, to the nearest tenth of a gram. (b) Find the...
-
The following table describes a randomized trial comparing an experimental medication to a placebo for treatment of reflux. Experimental Treatment Placebo (n = 100) Patient Characteristics (n = 100)...
-
Martha's Grain Shop recorded the following purchases and sales of fertilizer during the past year: Assume that Martha's Grain Shop sold all of the June 15 purchase and 100 cases each from the January...
-
In this exercise, you will remove the Math.Round function from the payroll application created in the lesson; doing this will allow you to observe the penny off error. Use Windows to make a copy of...
-
Pick an industry and a product or service. Engage in a creative-thinking process, as outlined in Chapter 11, to generate an improved offering. Do the same to create an entirely new offering that uses...
-
Refer to the problem chart for the automobile oil change in solved problem 2. Calculate the annual labor cost if: The mechanic earns $40 per hour (including variable fringe benefits). The process is...
-
In its simplest form, profit is: Fixed costs - Depreciation - Interest = Profit Sales/Turnover - Variable costs/Used goods = Profit (Actual retail price - cost)/ Actual retail price = Profit (Price -...
-
You are an equity analyst at an investment bank. You have been asked to perform valuation of Novice Ltd., a company that specialises in the media industry. You have been provided with the following...
-
If the lengths of the sides of a cube are tripled, by what factor will the volume change? x
-
A friend is taking another mathematics course and says, I have no idea what an expression like log 5 27 really means. Write an explanation of what it means, and tell how we can find an approximation...
-
Distinguish among results, conclusions, and recommendations.
-
What is the gain or loss in dollars that arose in 20x1 arising from the movement in net exposed items? (a) Remeasurement loss of $3,700 (b) Remeasurement gain of $3,700 (c) Translation loss taken to...
-
Compare and contrast people you know and list the characteristics that you believe makes that person a leader and include areas for improvement.
-
Do the individuals in my organization exhibit self-leadership?
-
Consider your surroundings; what are the products that you could acquire as a service instead of buying, owning, and trashing them?
-
How might women discern between traditional stereotype-based roles and opportunities that benefit from dual agentic and communal expectations?
-
Review the chapter's opener involving salesforce.com and its co-founder, Marc Benioff. Required 1. In a business such as salesforce.com, monitoring cash flow is always a priority. Even though...
-
After graduating from college and working a few years at a small technology firm. Preet scored a high-level job in the logistics department at Amex Corporation. Amex sells high-quality electronic...
-
In Exercises 1124, use mathematical induction to prove that each statement is true for every positive integer n. 1+3+32 +. ... +3n-1 = 31 2
-
In Exercises 1522, find the indicated term of the arithmetic sequence with first term, a1, and common difference, d. Find a 16 when a 1 = 9, d = 2.
-
In Exercises 916, use the formula for n C r to evaluate each expression. 6 C 0
-
Analyze the strategic approach to organizations innovation management including the organizational culture and the role of the individuals in the process.
-
Consider the real function of real variable defined by, f(x) = ex - IC 2x+1 1 for x0 for
-
Suppose Acap Corporation will pay a dividend of $2.73 per share at the end of this year and $3.08 per share next year. You expect Acap's stock price to be $53.81 in two years. Assume that Acap's...
Study smarter with the SolutionInn App