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

United States lawyer and politician who advocated free silver and prosecuted John Scopes (1925) for teaching evolution in a Tennessee high school

y - y₁ = m(x - x₁) Slope-Intercept Form of the Line General Linear Form of the Line Point-Slope Form of the Line Slope Form

Which battle produced the bloodiest day of the Civil War?

The 15th Amendment, which granted African Americans the right to vote, was passed on which date?

What modern First Lady wore a bejeweled American Flag in her lapel on every Fourth of July? Pat Nixon, Jackie Kennedy, Hillary Clinton Betty Ford?

true or false the american revolution was fought by the american colonies and china??

This song was popular with American troops during the Revolutionary War. Here is a part of its famous refrain: “Stuck a feather in his cap, and called it macar

IDEAS FOR RECONSTRUCTION, explain why they are good ideas?

Who wrote the sonnet, “The New Colossus,” which is engraved on the pedestal of the Statue of Liberty?

What special group advises the President of the United States? a. The Cabinet b. The Electoral College c. The Executive Branch