A hollow cylinder has outer radius 7 cm, inner radius 5 cm, and height 10 cm. Find volume of material.
Show answer & explanation
Correct answer: B
Explanation
Outer radius = 7 cm, Inner radius = 5 cm, Height = 10 cm
According to the formula:
Volume = πh(R² − r²)
= π × 10 × (7² − 5²)
= 10π × (49 − 25)
= 10π × 24 = 753.98 cm³