Question

Two sphere have a volume in ratio 64:24 find ratio of their surface area

Answer 1

Step-by-step explanation:

$v \: = \: 4 \div 3(\pi \: r ^{3} ) \: and \: area \: = \pi \: r ^{2}$

v1 = 64

V2 = 24

so R = 2.48

r = 1.78

A1 = 3.14 ( 2.48 )^2 = 3.14 ( 6.15 )

A2 = 3.14 ( 1.78 )^2 = 3.14 ( 3.16 )

A1/A2 = 6.15 ÷ 3.16 = 1.94