tolong yaa kak....................................

Lp tabung tanpa tutup
=>πr(r + 2t)
=>3,14 • 4(4 + 2(18))
=>3,14 • 160
=>502,4 cm²

Lp ½ bola
=>2πr²
=>2 • 3,14 • 4²
=>100,48 cm²

Total
502,4 + 100,48 = 602,88 cm²