Question

Tolong bantu y nomor 1-3

huat di kumpul besok

Answer 1

1). r = d/2 =14/2 = 7cm..... V = π x r² x t .......... 1540 = 22/7 x 7 x 7 x t...... 1540 = 154 x t ....... t = 1540 / 154....... = 10 cm .......jadi tinggi tabung 10cm.......... 3). V = s³......... S = √ V ........ = √ 2744..... = 14 dm ...... Diameter tabung = 3/4 x 14 = 10,5 : 2 = 5,25...... Volume tabung = π x r² x t ...... = 22/7 x 5,25 x 5,25 x 14.......... = 1212,75dm³........ 2) V = p x l x t ...... 720 = p x l x t ...... 720 = 120 x t ..... t = 720 : 120 ..... = 6 cm ...... P = 12 .....dan l = 10