Question

the diameter of spherical ball is 21 cm how much leather is required to prepare 5 such balls​

Answer 1

Answer:

Step-by-step explanation: from given radius is 21/2

Surface area of sphere is 4×pi×r^2=4×3.14×21/2

the leather required to prepare such 5 ball are= 4×3.14×21/2×5

Therefore the required is 659.4cm

Answer 2

Step-by-step explanation:

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