Find the ratio between whole surfaces of a sphere and a hemisphere? Choose the correct answer:
A) 4:3 B) 3:4 C) 3:2 D) 5:2 E) 4:6
4 Ï€r2 : 3 Ï€r2 =&gt; 4:3   4:3NSWER 4:3
<result>A</result>
Find the ratio between whole surfaces of a sphere and a hemisphere?