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

what approaches meeting the challenge of the depression was president hoover against?

Which substance can not be broken down by chemical means? (1) ammonia (3) methane (2) antimony (4) water

Which substance can not be broken down by chemical means? (1) ammonia (3) methane (2) antimony (4) water

You have just purchased a 6-lb bag of apples for $4.80 at a local produce stand. How much would you expect to pay for a 10-lb bag of apples?

deer meat is known by what name

6/16 OR 30/80 WHICH ONE is bigger?

Which list of elements contains two metalloids?(1) Si, Ge, Po, Pb (3) Si, P, S, Cl(2) As, Bi, Br, Kr (4) Po, Sb, I, Xe

Which molecule contains a triple covalent bond? (1) H2 (3) O2 (2) N2 (4) Cl2

how many miles did greek sailors travel between athens and naples?

Which statement must be true for any chemical reaction at equilibrium? (1) The concentration of the products is greater than the concentration of the reactants.