lar8yyes1jadel lar8yyes1jadel

04-11-2016
Mathematics

Answered

The surface area of a sphere is found using the formula SA=4_r^2 where r is the radius. If the surface area of a sphere is 144_ square feet, what is the radius, in feet?

Verified Answer :

JcAlmighty JcAlmighty

07-11-2016

The answer is 6 feet.

The surface area (SA) is
SA = 4πr²
r - radius

It is given:
SA = 144π feet²
r = ?

Since SA = 4πr², then: 144π = 4πr²

π can be canceled out: 144 = 4r²
⇒ r² = 144 ÷ 4 = 36
⇒ r = √r² = √36 = 6

Answer Link

LoganBS10 LoganBS10

15-10-2020

Answer:

588 m^2

Step-by-step explanation:

APEX

Answer Link

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