Tolong dibantu no.34 sampai 36 (Beserta caranya)

34.
LP = s² + (√4t² + s²) × s
= 12² + (√4.8² + 12²) × 12
= 144 + (√4.64 + 144) × 12
= 144 + (√400) × 12
= 144 + (20×12)
= 144 + 240
= 384 cm²    [B]      

35. Luas permukaan tabung tanpa tutup + selimut kerucut

π.r (r+2t) + πrs
π.5 (5+2.10) + π.5.13
5π . 25 + 65π
125π + 65π = 190π cm³    [A]

36.
r = 1/2 x d = 35 cm = 3,5 dm
t = 1,2 m = 12 dm

volume tabung = π x r x r x t
= 22/7 x 3,5 x 3,5 x 12
= 462 dm3 = 462 liter

debit = volume : waktu
= 462 : 6
= 77 menit

77 menit = 1 jam 17 menit    [A]