Question

Find the radius of sphere Whose surface area is 154cmsquare​

Answer 1

Step-by-step explanation:

hello friend here is your required answer

Let r be the radius of the sphere

surface area of the sphere=4πr sq

Also surface area=154cm sq

4π sq=154

4×22/7×r sq=154

r sq=154×7/4×22=12.25

r=+√12.25=3.5

Hence the radius of the sphere=3.5cm

Answer 2

surface area of sphere = 4πr^2

154 = 4πr^2

$r = \sqrt{ \frac{154}{4\pi} }$

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