Jawaban:

soal yang tadi lagi :D

Penjelasan dengan langkah-langkah:

a. Luas permukaan = 2x3,14x5x(5+14) = 31,4 x 19

= 596,6 cm²

Volume = 3,14 x 5² x 14 = 1.099 cm³

d. r = √(15²-12²) = √(3)(27) = 9 cm

Lp = 3,14 x 9 x (9+15) = 678, 24 cm²

V = 3,14 x 9² x 12/3 = 1.017, 36 cm³

e. s = √(15²+(16/2)²) = √289 = 17 cm

Lp = 3, 14 x 16/2 x (16/2 + 17) = 628 cm²

V = 3, 14 x (16/2)² x 15/3 = 1004,8 cm³

g. r = 12

Lp = 4 x 3, 14 x 12² = 1.808,64 cm²

V = 4 x 3, 14 x 12² x 12/3 = 7.234, 56 cm³

j. r = 6

Lp = 3, 14 x 12 x (6 + 15) = 791, 28 cm²

V = 3, 14 x 6² x 15 = 1.695, 6 cm³