math math math

what are the formulas for the area and circumfrence of a circle

  1. 👍 0
  2. 👎 0
  3. 👁 85
  1. A = pi * r^2

    C = pi * d

    http://www.mathsisfun.com/geometry/circle.html

Respond to this Question

First Name

Your Response

Similar Questions

  1. math 5th

    Estimate the area of the circle and use 22/7 for pie. Teh circle shows line all the way accross measruing 28cm. Find area. Can some one explain how

    asked by Courtney on April 24, 2013
  2. maths

    radius (r) of a cicrlce is divided into 10 equal sections. The area of the circle = sum of the areas of the pie-shaped sections. We can estimate the area of the circle by thinking of each pie-shaped piece as a triangle with base B

    asked by rajkaur on January 4, 2019
  3. math

    The area of a circle is 25π square inches. What is the length of the radius of the circle in inches? (Area of circle = πr^2). I don't understand it please explain it to me

    asked by Jordan on October 17, 2016
  4. Precalculus

    Hey so I need help on a problem from an assignment that my teacher won't help at all. -WRITE IN COMPLETE SENTENCES- "An oil strikes a sand bar that rips a hole in the hull of the ship. Oil begins leaking out of a tanker with

    asked by Kat_Lockwood on October 21, 2014
  5. math

    The area of a circle is given by the formula A = ðr2, where r is the radius. If increasing the radius of a circle by 1 inch gives the resulting circle an area of 100ð square inches, what is the radius of the original circle?

    asked by Anna on March 26, 2015
  1. math

    C = 2(pi)r and C = d(pi) are the formulas for finding the _____________ of a circle. Radius Area Circumference Diameter not very good at these but thanks if you wanna help me :)

    asked by playtime on September 7, 2019
  2. 7th grade masth asap hurry plz ms.sue somebody plz

    The area of a circle is found with the formula A = pi r^2, where pi represents 3.14. If a tile artist is placing tiles in a circular mosaic pattern and the area of the circle is 658 square feet, what is the approximate radius of

    asked by Delilah on October 8, 2012
  3. Intro to computers

    You are an inexperienced Excel user and don’t know how to create your own formulas. You want to use one of the preconfigured formulas but it doesn’t appear in the Formulas tab ribbon. What can you do?

    asked by Anonymous on May 29, 2016
  4. geometry

    In a circle centered at point O, the ratio of the area of sector AOB to the area of the circle is . What is the approximate measure, in radians, of the central angle corresponding to ? Round the answer to two decimal places

    asked by Mallory on January 5, 2017
  5. 8th grade math

    circle A has a raduis that is twice the length og the raduis of circle B. Which is an accurate statement about the relationship of these areas of circle A and B and y? a.the area of circle A is 4 times the area of circle B b. the

    asked by Court on December 16, 2010
  6. Math

    Which of the following dimensions of a circle is always smaller than the other two? a. the circumfrence b. the diameter c. the radius d. it depends on the size of the circle I believe the answer is C

    asked by Diane on September 23, 2008

You can view more similar questions or ask a new question.