Question

Tolong bantu jawab dengan caranya

Answer 1

(2 × alas) + ( luas selimut)
(2 × phi × 5 ×5) + ( 2 × phi × 5 × 10)
50phi + 100phi
150phi

Answer 2

R tabung = r bola = 5
ttabung = d tabung = 2r = 2x5 =10
Luas seluruh tabung = 2 luas alas + luas selimut
L= 2(π r² ) + 2π r t
L = 2 π r(r + t)
L = 2 π (5)(5+10)
L = 150 π