Tolong bantu dijawab

jawab 
r^2 = 5^2 - 4^2
r = 3

Luas = luas sel kerucut + luas 1/2 bola
L =  pi r s +   2 pi r²
L = pi r (s + 2r)
L = 3,14 . 3 ( 5 + 6)
L = 3.14 (33)
L  =  103,62 

t = 4 cm
s = 5 cm

jawab :
r = √5²-4²
r = √25 - 16
r √9
r = 3 cm

L = π × r (s + 2r)
= 3,14 × 3(5+6)
= 3,14 × 33
= 103,62 cm²
atau
= 103,6 cm²

opsi → c.

semoga membantu ya..........