Question

Find the radius of a sphere whose surface area is 154 cm​

Answer 1

Answer:

hey Mate ur answer is ...

Given, surface area of sphere =154 cm^2=154cm

2

Surface area of a sphere of radius 'rr' = 4\pi { r }^{ 2 } = 154 =4πr

2

=154

$$ \Rightarrow 4 \times \dfrac {22}{7}

\times { r }^{ 2 } = 154 {cm}^{2} $$

\Rightarrow { r }^{ 2 } = \dfrac {49}{4} ⇒ r

2

= 4

49

\Rightarrow r = \dfrac {7}{2} = 3.5⇒ r=

2

7

=3.5 cm

Answer 2

Answer:

surface area of sphere = 4πr^2

154 = 4πr square

put the value of pie

the remaining part of it, is given above the picture

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