Question

please anyone say answer for my question
if you answer I will mark you as brainlist​

Answer 1

Step-by-step explanation:

Question 8

consider the TSA of hemisphere and sphere

take value of one of the radius with respect to other

take the ratio of volume of hemisphere and sphere

put the value obtained of radius in the ratio

simplify the equation

get your answer!

Question 9

from given surface area find radius of both sphere

find the volume of both sphere

subtract volume of smaller sphere from larger sphere

get the volume of material required!

:)