Reyrey13
Reyrey13 Reyrey13
  • 19-04-2017
  • Mathematics
contestada

A circle has an area of 81pi square units. What is the diameter of the circle
A-18
B-9
C-162
D-none

Respuesta :

Аноним Аноним
  • 19-04-2017
The diameter of the circle is 18 unit which is A. Hope it help!
Answer Link
Аноним Аноним
  • 19-04-2017
Area of circle (Formula) = πr^2 
81π = πr^2 
r^2 = 81 
radius = 9 
 
Hope this helps!
Answer Link

Otras preguntas

Can you solve for t in -100=12t-4?
Can you solve for t in -100=12t-4?
Write in order from least to greatest:1.192, 1.092, 0.1092, 1.9
how do I figure out the weight loss of tina? she lost 3 pounds on the first week of her diet. she gained a pound on the second week, and then lost 2 pounds a we
A bone that is broken but does not pierce the skin is a what?
How would you algebraically factor x squared minus 15?
How many lines of symmetry does the hexagon have?
x^3+13x^2+32x+20 please help me factorizing above equation
determine the smallest 6 digit number which is exactly divisible by 8,15,and21
Describe how a person can count the rate if beating of the left ventricle.