A spherical ball of iron is to be produced. If the radius of the ball is 3 cm and the weight of iron per cm3 is 30g, what would be the weight of the ball?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 1080π g.
Volume of sphere = (4/3)πr3 = (4/3) × π × 33 = 36π cm³
Weight of ball = Volume × Density = 36π × 30 = 1080π g