Question

Pls answer a b and c

Answer 1

Answer:

Given

• r = 1.6 cm
• h = 6.2 cm

a.

Volume of the half-sphere:

1. V/2 = 1/2*4/3*πr³ = 2/3*3.14*1.6³ = 8.6 cm³ (rounded)

b.

Volume of the cylinder:

• V = πr²h = 3.14*1.6²*6.2 = 49.8 cm³

c.

Volume of the figure:

• V = 8.6 + 49.8 = 58.4 cm³

Answer 2

FORMULA:

• Volume of hemisphere = 2/3πr³
• Volume of cylinder = πr²h

ANSWER:

[a] Volume of half sphere = 2/3πr³

• 2/3 × 3.14 × (1.6)³
• 8.57cm³ or 8.6cm³ rounded.

[b] Volume of cylinder = πr²h

• 3.14 × (1.6)² × 6.2
• 49.8cm³

[c] Volume of whole figure = 8.6cm³ + 49.8cm³

• 58.4cm³