Tolong dijawab pakai cara ya,makasih

jawab

d = 14
r = 7
t kerucut = 31 - 7 = 24
s kerucut = √t²+r² = 25

Luas bangun = luas 1/2 bola + luas sel kerucut
L = 2π r² +  π r s
L = π r ( 2r + s)
L = 22/7.7 (14 + 25)
L= 22 (39)
L = 858 cm²