How do I go about this Geometry problem?

bornbeautiful58: How do I go about this Geometry problem?
How do I do a problem like this? I don’t remember ever doing problems like this when I took geometry? My teacher said this should be REVIEW. Can you please help?
Compare: A. Surface Area of a sphere with a radius of 1cm, B. Area of circle with a radius of 2cm.

Answers and Views:

Answer by RFW
A . Area1 = 4*pi*r`2 = 4 pi cm2
B. Area2 =pi*R`2= 4 pi cm2

Both are the same

Answer by Kelle
Area of a circle is Pi R squared ( Pi is 3.14, R is radius)

A = 3.14 x radius

Area of a sphere, I forget. is it in your book?

Answer by michaelempeigne
SA(sphere) = 4pi*r^2
= 4pi*1^2
= 4pi cm^2

A(circle) = pi*r^2
= pi*2^2
= 4pi cm^2

Answer by Happy Go Lucky
The formulas for them are

Sphere: 4pi(r^2)
Circle: pi(r^2)

they both involve pi and a radius… thats pretty much it. Other than that they really dont compare.

Hope I helped