A) 4 : 9
B) 2 : 3
C) 4 : 5
D) 5 : 6
Correct Answer: A
Solution :
Let the volumes be \[8{{x}^{3}}\] and \[27{{x}^{3}}\] \[\therefore \] Their radius are \[2x\] and \[3x\] \[\therefore \] The ratio of their surface area \[=4{{x}^{2}}:9{{x}^{2}}=4:9\]You need to login to perform this action.
You will be redirected in
3 sec