Jawaban:

Gambar A

V = 1.232 cm³

LP = 704 cm²

Gambar B

V = 1.225 cm³

LP = 931 cm²

Penjelasan dengan langkah-langkah:

Gambar A

Volume = ⅓ × πr² × t

Volume = ⅓ × 22/7 × 7 × 7 × 24

Volume = 8 × 154

Volume = 1.232 cm³

Luas Permukaan = luas alas + luas selimut

LP = πr (r +s)

s² = 24²+7²

s² = 576+49

s = 25 cm

LP = πr (r+s)

LP = 22/7 × 7 × 7 + 22/7 × 7 × 25

LP = 154 + 550

LP = 704 cm²

Gambar B

Volume = ⅓ × (p × l) × tinggi prisma

Volume = ⅓ × 147 × 25

Volume = 1.225 cm³

Luas Permukaan = luas alas + jumlah luas sisi tegak

LP = (21×7) + [2 (½×7×28) + 2 (½×21×28)]

LP = 147 + [2(98) + 2(294)]

LP = 147 + (196 + 588)

LP = 147 + 784

LP = 931 cm²