Question

class-9th
ch-13
ex-13.3
6.) find the radius of a sphere whose surface area is 154cm²?
.
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Answer 1

Answer:

x = 3.5 cm

hope it helps youhh dear

Answer 2

Answer:

Let x be radius

⇒Surface Area =154cm

2

∴4πx

2

=154

⇒x

2

=

4×22

154×7

=

4

49

⇒x=

4

49

x=3.5cm

thankyou