math

A circle is circumscribed about an equilateral triangle with side lengths of 9 units each. What is the area of the circle, in square units? Express your answer in terms of pi.

  1. 👍
  2. 👎
  3. 👁
  1. in an equilateral triangle, the altitudes are the medians.

    So, the radius of the circle is 2/3 of the length of each altitude.

    ...

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Math HELP

    #1 find the value of x if RS = 4(x-3)+6 and RT = 5(2x-6). x= 12 x= 6 x= 4*** x= 3 #2 which of the following statements are always true? Choose all that apply. If the circumcenter of a triangle lies on the triangle, then the

  2. Math

    29. An equilateral triangle of side 10cm is inscribed in a circle. Find the radius of the circle

  3. geometry

    1. Triangle ABC has a 63.0-degree angle at B, and side AC is 13.6 cm long. What is the diameter of the circle circumscribed about ABC? 2. And: Given any triangle ABC, with sides a, b, and c opposite angles A, B, and C,

  4. Math

    Which of the following is a regular polygon. 1. rectangle 2. circle 3. equilateral triangle 4. trapezoid I want to say it " equilateral triangle"

  1. Math

    Classify the triangle by its sides. Triangle has side lengths of 15, 15, and 20. Scalene Triangle. Isosceles Triangle. Equilateral Triangle. Right Triangle.

  2. math

    an equilateral triangle of side 10cm is inscribed in a circle. find the radius of the circle? show the solution

  3. math

    an equilateral triangle of side 20cm is inscribed in a circle calculate the distance of a side of the triangle from the centre of the circle

  4. geometry

    An angle bisector of a triangle divides the opposite side of the triangle into segments 6 cm and 5 cm long. A second side of the triangle is 6.9 cm long. Find the longest and shortest possible lengths of the third side of the

  1. math

    The altitude of an equilateral triangle is 6 square 3 units long. The length of one side of the triangle is ____ units.

  2. Geometry

    A circle has a radius of 6 inches. The circumscribed equilateral triangle will have an area of:?

  3. math

    An equilateral triangle is inscribed in a circle. The radius of the circle is 21 in. Determine the side length of the triangle to the nearest 10th of an inch

  4. Math, Ms. Sue Help asap plss

    Can the numbers 24, 32, and 40 be the lengths of three sides of a triangle? Why or why not My answer: Yes it can. Because the 3 lengths satisfy the triangle inequality theorem. The triangle inequality theorem states that the third

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