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 3 years ago
Find the length of the radius of a sphere with a surface area of 78.54 km2.
A. 5 ft
B. 15 ft
C. 10 ft
D. 2.5 ft
 3 years ago
Find the length of the radius of a sphere with a surface area of 78.54 km2. A. 5 ft B. 15 ft C. 10 ft D. 2.5 ft

This Question is Closed

TuringTest
 3 years ago
Best ResponseYou've already chosen the best response.0what google didn't work this time?

JamesJ
 3 years ago
Best ResponseYou've already chosen the best response.1\[ Surface \ Area = 4 \pi r^2 \] where r is the radius. Use this formula to find the answer.

FoolForMath
 3 years ago
Best ResponseYou've already chosen the best response.1Google is not smart enough.

TuringTest
 3 years ago
Best ResponseYou've already chosen the best response.0\[A=4\pi r^2\]so\[r=\sqrt{\frac{A}{4\pi}}\]so plug in the value you are given for the area A, out will come r, your answer, as James will testify

FoolForMath
 3 years ago
Best ResponseYou've already chosen the best response.1well calculating things is actually hard; no ?

hugsandkisses
 3 years ago
Best ResponseYou've already chosen the best response.1wait, what the heck is the radius?

FoolForMath
 3 years ago
Best ResponseYou've already chosen the best response.1yeah it's a heck! what the heck is that!!!

GT
 3 years ago
Best ResponseYou've already chosen the best response.4That is what needs to be figured out. So, call it r for now.

EarthCitizen
 3 years ago
Best ResponseYou've already chosen the best response.0Just explain the damn thing!

hugsandkisses
 3 years ago
Best ResponseYou've already chosen the best response.1oh wait, sorry. that was a dumb question. I was looking at it backwards

rainbow22
 3 years ago
Best ResponseYou've already chosen the best response.0What's wrong with Google?

TuringTest
 3 years ago
Best ResponseYou've already chosen the best response.0your mantra:\[A=4\pi r^2\]so\[r=\sqrt{\frac{A}{4\pi}}\]

GT
 3 years ago
Best ResponseYou've already chosen the best response.4EarthCitizen  Lot of people dedicate their time to help here. I don't think making demands on them and throwing arrogant insults is the best way to show respect and gratitude for their contributions.

EarthCitizen
 3 years ago
Best ResponseYou've already chosen the best response.0whose arrongant and pompous by teasing ppl for the unfamiliarity with a topic! Focus!

TuringTest
 3 years ago
Best ResponseYou've already chosen the best response.0where is saifoo? he is neglecting his modship

GT
 3 years ago
Best ResponseYou've already chosen the best response.4I don't remember anyone making fun of people for not knowing. Nobody even makes fun of not getting it. Yes, sometimes people do expect "learning" and insist on it.

hugsandkisses
 3 years ago
Best ResponseYou've already chosen the best response.1wait, you guys.. im totally lost :/ i need help.

FoolForMath
 3 years ago
Best ResponseYou've already chosen the best response.1protempore mods can't be assigned much of tasks

TuringTest
 3 years ago
Best ResponseYou've already chosen the best response.0Just for good measure\[A=4\pi r^2\]so\[r=\sqrt{\frac{A}{4\pi}}\]plug in the surface area (given in the problem) where the A in the formula goes. Out comes r, the answer.

EarthCitizen
 3 years ago
Best ResponseYou've already chosen the best response.0then tech the best way YOU CAN!

FoolForMath
 3 years ago
Best ResponseYou've already chosen the best response.1On the contrary I find EarthCitizen a bit swanky.

FoolForMath
 3 years ago
Best ResponseYou've already chosen the best response.1TuringTest: May be she needs helps in finding the square root too ?

GT
 3 years ago
Best ResponseYou've already chosen the best response.4Surface are of sphere = 4*pi*r^2 = 78.54km^2 So, r^2 = 78.54/(4*pi) So, r = SQRT(78.54/(4*pi)) So, r = ?

hugsandkisses
 3 years ago
Best ResponseYou've already chosen the best response.1sorry you guys for being so cranky. along with math, I am also completing an essay. lots of work and multi tasking

GT
 3 years ago
Best ResponseYou've already chosen the best response.4We are thick skinned! Glad to see you do it.

bimbim2697
 3 years ago
Best ResponseYou've already chosen the best response.0GT CAN U HELP ME PLZ?

hugsandkisses
 3 years ago
Best ResponseYou've already chosen the best response.1thankyou. still a lot more!! have the patience?

GT
 3 years ago
Best ResponseYou've already chosen the best response.4Well, I am also dark skinned on top!! hahahahaahaha.

FoolForMath
 3 years ago
Best ResponseYou've already chosen the best response.1lol! I ain't dark skinned like you GT :P

EarthCitizen
 3 years ago
Best ResponseYou've already chosen the best response.0i see the light in U!

Atchyut
 3 years ago
Best ResponseYou've already chosen the best response.0First of all question is somewhat wrong!!!!! Radius is a quantity representing length and radius doesn't need to be written as length of the radius. And coming to answer Surface area of sphere is 4*pi*r*r. From that r can be found out substituting others.
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