Question

there are two sphere of same metal weight 1 and7 . the radius of smaller sphere is 3 cm.t he two sphere are melted and form new sphere . find radius of new sphere​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer: This is your answer bro

Step-by-step explanation:

Mass of small sphere = 1 kg

Mass of larger sphere = 7 kg

          ∴        1/7 = volume of small sphere/ volume of larger sphere

                      1/7 = 4/3 π r³ / 4/3 π R³

                      1/7 = 3³/R³

                        R = 3∛7

Volume of new sphere = Volume of small sphere + volume of larger sphere

4/3 π r³ = 4/3 π r³ + 4/3 π R³

4/3 π r³ = 4/3 π (r³ + R³)

        r³ = 3 + (3∛7)³

            = 27 + 27 × 7

            =  27(1+7)

            = 27 × 8

           r = ∛3×3×3×2×2×2

           r = 3×2

           r = 6 cm