Question

Nmr 29-31 + pke rumus

Answer 1

29. V = phi × r^2 × T

= 22/7 × 15^2 × 28

= 22/7 × 225 × 28

= 22 × 225 × 4

= 19.800 cm^3 (b)


31. V = r × r × r

= 30 × 30 × 30

= 27.000 cm^3

= 27.000 ÷ 1.000

= 27 liter (c)