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

can somebody tell me how to solve this i'm begging.

What does the y-intercept of the line represent? A total time spent running B. average time to run one lap Caverage time spent running to the school track D. a

What is the result when the number 89 is decreased by 9.6%?

Find the angle x Please help

Write an essay explaining the ways in which mobile communication technology have improved in the following sectors: education, retail and politics

PLEASE HELP ILL GIVE 50 POINTS LOOK AT THE PICTURE

3 4 6 13 16 19 ◄)) and Submit have a sum of 25

A square 4.5 m long and 1.2 m wide has a 25 cm wide border all around it on the inside. Find the cost of weaving the border at 15 paise per cm². ding it. If th

Which of the following would be considered a precedent established under the presidency of gorge Washington

x + 4y =6 y=- -x + 3