Find the ratio between whole surfaces of a sphere and a hemisphere?	Answers:  A) 4:9  B) 4:3  C) 4:6  D) 4:2  E) 4:1
4 πr2 : 3 πr2 =&gt; 4:3   Answer:4:3
<result>B</result>
Find the ratio between whole surfaces of a sphere and a hemisphere?