sirens48
sirens48 sirens48
  • 02-01-2018
  • Mathematics
contestada

A circle has an area of 324π cm2. What is the radius?
a.
18 cm
c.
18π cm
b.
36π cm
d.
36 cm

Respuesta :

musiclover10045
musiclover10045 musiclover10045
  • 02-01-2018

area of a circle = PI*r^2

324PI = PI*r^2

divide both sides by PI

324 = r^2

r = sqrt(324)

r = 18

 Answer is A 18 cm

Answer Link

Otras preguntas

Sound or musical elements of poetry may include all but _____. alliteration metaphor rhyme rhythm
In which part of a story is the lesson or main message revealed?
apathy A. being aware of B. lack of feeling C. sense of excitement D. lack of trust
Why does George Orwell present Animal Farm as a fable? A. to show what a perfect society would be like B. to make a moral point at the end of the story C. to po
If five slices of pizza cost $5.50, how much do two slices cost? Ten slices? Half a slice ?
Solve by factoring: 25X^2+5X-12=0
Which outcome resulted from the period of Prohibition in the United States?
Which form of the modifier correctly completes the sentence? That hat looks really __________ on you. A. well B. good
In which part of a story is the lesson or main message revealed?
How many oxygen atoms are found in one molecule of nitric acid, HNO3?