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

answering this Q plz

Which equilibrium at one atmosphere pressure is correctly associated with Kelvin temperature at which it occur?a. ice-water equilibrium at 0 K b. ice-water equ

"If a researcher creates the idea for a project and is not listed in the preferred author order position on resulting publications, is this considered to be res

given the 5th term is 103 and the come differences is -6 2/3 what is the 6th term?

Samantha has a loan with an interest rate of 6.67 percent now, but the rate could increase 2 percent next year. What lending term best describes this loan?

The density of mercury is 13.6 g/cm3 calculate the mass of 1 cm3 of mercury

According to the USA, which of the following does not fall under the definition of an IAR?

The processes of perception and judgment with which we make sense of our social world are known as A. social cognition. B. nonverbal understanding. C. social wo

PLEASE HELPPPPPP!!!!! What is the equation of this line? (A) y = 2x (B) y = 1/2x (C) y = −1/2x (D) y = −2x

The __________ is the combination of Active and Reserve Components Service Chiefs provide, and Combatant Commanders effectively use to full capability.a. Total