In the Hope family there are seven sisters, and each sister has one brother.Including Mr. and Mrs.Hope, how many are in the fami
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If this is an equilateral triangle, we need half of it to find the height which is a leg of a right triangle with a hypotenuse of 15. That means that the base of this half triangle is 7.5. Use Pythagorean's Theorem to fine the height. 
. x = 12.99 or 13
Answer:
<em>C = 13π ≈ 40.82 units </em>
Step-by-step explanation:
C = 2 r π = d π
AB = = 13 units
<em>C = 13π ≈ 40.82 units</em> ( π ≈ 3.14 )