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

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

Avery would like to include an interactive element in a blog post persuading readers to try yoga. Which would most enhance her post? a quiz about the history of

- 32x - 40 Whats the first step that I should do

An aluminum cylinder has a radius of 3.2 cm and a length of 8.6 cm. What is the mass of the aluminum cylinder if aluminum has a density of 2.7 g/cm3? please he

please solve my question

what are some healthy and unhealthy was people deal with emotions

In a paragraph, describe the function the stomach serves in the digestive system. What function do kidneys serve in the urinary system?

if x = y and y=z which statement is true?

A fuel tank has a volume of 34 gallons. When filled with biodiesel, it provides 4,250,000 BTUs. How many BTUs does 1 gallon of biodiesel yield?

What does Beowulf say about himself and his past deeds? Why does he appear to boast about his accomplishments?

The electric motor of a model train accelerates the train from rest to 0.620 m/s in 21ms. The total mass of the train is 825 g. find the average power delivered