SA of whole sphere = 4π(35)^2 = 4900π
so half of that is 2450π cm^2
Find the surface area
A hemisphere with diameter 70 cm
6 answers
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 surface area = 3 *22/7* (35)^2= 11550 cm^2
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 surface area = 3 *22/7* (35)^2= 11550 cm^2
The figure is= a hemisphere
The diameter is= 70
Half the diameter is= 70/2~ 35
If it is a closed hemisphere:
S.A.= 3(3.14)(35)^2
S.A.=3(3.14)(1,225)
S.A.=3,675(3.14)
S.A.=11,539.5~ round up to
S.A.=11,540
The diameter is= 70
Half the diameter is= 70/2~ 35
If it is a closed hemisphere:
S.A.= 3(3.14)(35)^2
S.A.=3(3.14)(1,225)
S.A.=3,675(3.14)
S.A.=11,539.5~ round up to
S.A.=11,540
A hemisphere with diameter 70cm
A hemisphere with diameter 70 cm
65
1 answer