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

A photograph has a length that is 2 inches longer than it’s width, x. So it’s area is given by the expression x(x+2) square inches. If the area of the photograp

There is a 20% chance of thunderstorms tomorrow. Describe the likelihood of the event. Please help asap! I need a clear answer for what to put in the answer box

Acid is added to a beaker containing crushed marble. What effect does stirring this mixture have on the system? the surface area of the particles increases

Can someone tell me if this is Irrational or not.

What is: -1/8+3/8-5/8+7/8=

Is this sentence simple, compound, or complex in its structure? When we left home, the rain was heavy.

I have a question and no one has helped me yet so I'm re-submitting it. thanks in advance.

¿Haces las maletas? A. sí, la hago B. Sí , la haces C. Sí, las haces D. Sí, las hago

y = f(x) = -34Find f(x) when x = 0.

Use a protractor to measure the angle formed by each pair of lines