Jawaban:

1.

Diketahui:

t = 21 cm

r = 14 cm

π = 22/7

Ditanyakan:

V?

Jawab:

V = 1/3 × π × r² × t

V = 1/3 × 22/7 × 14² × 21

V = 1/3 × 22/7 × 196 × 21

V = 1/3 × 22/7 × 4.116

V = 4.312 cm³

2.

Diketahui:

r = 14 cm

π = 22/7

Ditanyakan:

a. Lp

b. Volume

Jawab:

a. Lp = 4 × π × r²

Lp = 4 × 22/7 × 14²

Lp = 4 × 22/7 × 196

Lp = 2.464 cm²

b. V = 4/3 × π × r³

V = 4/3 × 22/7 × 14³

V = 4/3 × 22/7 × 2.744

V = 11.498,66 cm³

3.

Diketahui:

r = 7 cm

π = 22/7

t = 10 cm

s = 12 cm

Ditanyakan:

Lp kerucut?

Jawab:

Lp = π × r (r + s)

Lp = 22/7 × 7 (7 + 12)

Lp = 22/7 × 7 × 19

Lp = 418 cm²

Penjelasan dengan langkah-langkah:

Semoga membantu❤