Question

3. The radius of sphere is 10 cm. If the radius is increased by 5%, find by how much per cent
the volume is increased ?​

Answer 1

Step-by-step explanation:

=10 + 1/20 = 201/20 = 10.05 cm, Now, new volume = 4/3πR³ = 4/3 × 22/7 × (10.05)³ = 4253.64 cm³, So, increase in volume = (4253.64 - 4190.47)cm³ = 63.17 cm³. 63.17 /4190.47× 100 = 1.5%