1.

The diameter ofa sphere whose surface area is 616cmis​

Answer»

SURFACE AREA of sphere=4πr

2

By data

4πr

2

=616

7

22

×r

2

=616

r

2

=

4×22

616

7

×7

r

2

=7×7

r

2

=49

r=7 cm

∴ Diameter of the sphere=2r

=2×7

=14 cm



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