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

a long distance telephone company charges a rate of 8 cents per minute or 90 cent mininum charge per call, whichever is greater. Find the cost in cents per minu

How many quarts in 24 pints?

Why did the settlers go to new mexico during manifest destiny?

A special form of loose connective tissue that pads and insulates the body and stores fuel reserves is known as (A) epithelial tissue. (B) adipose tissue. (C) f

rewrite the expression without using a negative exponent 6m^-2

57% of 109 is what number? plz help

I would like to know if 200 cm is greater or less than 3 m

use the function rule, y= 2x+5, to find the values of y when x =1,2,3,4. write the answers as ordered pairs that would be used to graph the function. show your

What happens at a conservative plate boundary? Someone please help me in this because I have test today. Aswell please don't copy it from the internet.

Which of the following factors does not favor a change in gene frequency and, therefore, evolution? (A) large populations (B) mutations (C) emigration (D) genet