volume sebuah tabung 88.704 cm².jika tingginya 36cm,hitunglah panjang jari2 tabung

Dik. Volume tabung = 88.704 cm^2 & tinggi tabung = 36cm
Dit. Jari jari tabung?

Jawab...

Volume tabung = phi × r^2 × t
@ V = phi × r^2 × t
@ 88.704 = 22/7 × r^2 × 36
@ 88.704 × 7/22 = r^2 × 36
@ 28.224 = r^2 × 36
@ r^2 = 28.224/36
@ r^2 = 784
@ r = /784
@ r = 28 cm

Note : tanda ^ itu pangkat & tanda / itu akar ya
Semoga membantu.. ^_^