18-05-2016
Mathematics

contestada

find the circumference of a circle if the area is 45m^2

Respuesta :

apologiabiology apologiabiology

18-05-2016

C=2pir
A=pir^2
45=pir^2
divide both sides by pi (aprox pi=3.141592)
14.32394785=r^2
sqrt both sides
3.784699176=r
sub
C=2pir
C=(2)(pi)(3.784699176)
aprox pi=3.141592
C=23.779961311m

Answer Link

Otras preguntas

A rectangle is dilated by a factor of 1/5. The area of the new rectangle is 4 square yards . What could be the dismension of the original rectangle

How do you do x ^4-4? What is the x values?

Over what interval is the growth rate of the function decreasing?

Which statements are true about the regular polygon? Check all that apply. The sum of the measures of the interior angles is 900°. Each interior angle measure

China has three main languages, and many more dialects. this presents a particular challenge to developing a global ________ strategy.

Anybody got an answer ?

A developmental psychologist would be interested in studying __________. A. different philosophies about life after death B. psychological changes that occur du

When Germany declared war on France and Russia in 1914, what was President Wilson’s position?

Te aconsejo que ____ una reservación con el hotel antes de llegar.

what is the measure of an exterior angle of a 18 sided polygon