tolong jawap pakai caranya

Luas = luas selimut tabung + luas 1/2bola
= (keliling alas x tinggi )+ (1/2.4.phi.r^2)
= (2.phi.r x t ) + (2.phi.r^2)
= (2.22/7.(7/2)^2.33,5) +( 2.22/7.(7/2)^2
= ( 44/7.49/4.33,5) ' + (44/7.49/4)
= (11/7.33.5) '+ (11/7)
= (368,5 /7) + (11/7),
= 379,5/7
= 54,24 m^2