Question

find the surface area and volume of a sphear having radius 21cm ​

Answer 1

Step-by-step explanation:

volume=4/3Πr³

4/3×22/7×(21)³

4×22×21×21

=38808

Answer 2

Answer:

surface area of sphere = 4pie r^2

= 4×22/7×21×21

= 4 × 22 × 3× 21

= 5544cm square

Volume = 4/3 pie r ^3

= 4/3 × 22/7 ×21×21×21

= 38808 cm cube

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