Question

Pls help me answer the question ​

Answer 1

r = 1.25cm

R = 5.75cm

h = 15cm

V = πR²h - πr²h

V = πh(R² - r²)

V = 22/7 × 15 ((5.75)² - (1.25)²)

V = 22/7 × 15 × 31.5

V = 22 × 15 × 4.5

V = 1485 cm³

Weight rate = 5g/cm³

Weight = 1485 × 5

Weight = 7425 g or 7.425 kg