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

round 9,254 to the nearest hundred

how does arachne feel about her weaving skill

Which statement best applies to the slope of the line below? A. the slope is negative B. the slope is zero C. the slope is positive D. the line has no slope

Identify two different habitats in a prairie ecosystem.Name one organism found in each habitat.

6. All of the following changes occurred in China between 1500 and 1800 except (1point) A. An increase in population B. Growth in manufacturing and trade C. Imp

what is the historical circumstance for the third amendment?

Many of the people who have come to Mexico City have ended up living in areas _____.

What effect does observing a substance's physical properties have on the substance?

round 44,769 to the nearest ten

If the ordered pair (2,4) is on the graph f(x), find one ordered pair that will be on the following functions: a) f(x)-3 b) f(x-3) c) 2 f(x) d) f(x-