sourcandy212
contestada

WILL MARK BRAINLIEST
The surface area of a sphere is 900pi square inches. What is the radius of the sphere?

Recall the formula SA= 4 pi r^2.
15 inches
18 inches
30 inches
60 inches

Respuesta :

Answer:

15 inches

Step-by-step explanation:

The formula for the circumference of a circle of radius R is 2*Pi*R.  Similarly, the volume of a ball enclosed by a sphere of radius R is (4/3)*Pi*R3. And the formula for the surface area of a sphere of radius R is 4*Pi*R2. And, you can check that the latter is the derivative of the former with respect to R.

zrh2sfo

Answer:

15 inches

Step-by-step explanation:

SA=4PIR^

900PI=4PIR^2

R^2=900PI/4PI

R^2=225

 

R=SQRT225

R=15 IN.

PROOF:

900PI=4PI^15^2

900PI=4PI*225

900PI=900PI

Otras preguntas