Kayliereinkingh Kayliereinkingh

04-05-2017
Mathematics

contestada

The exact area of a circle is 81 pi square inches what are the radius and diameter of the circle

Respuesta :

greenie269 greenie269

07-05-2017

A=81pi
Since the formula for area is A=pi*r^2, you know that 81 was their "squared" answer.
Take the sq. rt. of 81, which is 9. this is your radius.
Diameter is always double your radius. 9+9=18.

Answer Link

Otras preguntas

I'm stuck on this one can someone please help me I will appreciate it

Which of the following are characteristics of Zygomycota? Check all that apply. -lack reproduction phase -spores produced in basidia -spores produced in zygospo

Two glucose molecules are bonded together through a dehydration reaction to form a disaccharide called maltose. the molecular formula of glucose is c6h12o6. wha

This is an equation that indicates how the variables are related to one another.

Mobile devices typically come pre installed with standard apps like web browsers , media players, and mapping programs true or false?

721 micrometers into kilometers

When do you think it is unfair or deceptive to try to use emotions to persuade people?

Opium is drived from the cacao plant ?

Which two things must be accomplished by the introduction if the author is using safe order

How did glacial movement affect the Nordic countries? Select all that apply. A. caused the formation of fjords B. caused the North Atlantic Current C.