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Answers (2)
here we are given diameter = 70 first of all we find radius = 70/2 = 35 now we apply the formula to find hemisphere if it is open like a bowl then curved surface area 2Π r^2 surface area 2* 22/7* (35)^2 = 7700 cm^2 If it is a closed hemisphere then
as x is greater than or equal to 4 so all values which are either greater than 4 are solution but -4 is less than 4 so -4 is not a solution
