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Answered by
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Answer:
3.5cm( ans )
Step-by-step explanation:
⇒Surface Area =154cm^2
∴4πx ^2 = 154
⇒x^2 = 154×7 / 4×22 = 49/9
⇒x= √49/4 x=3.5cm
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hope it helps you dear, study well.
Answered by
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Step-by-step explanation:
let the radius of sphere be r
surface area of sphere = 4 π (r^2)
154 = 4 × (22/7) × (r^2)
(154 × 7) / (4 × 22) = (r^2)
(49/4) = (r^2)
(7/2) = r
3.5 cm is the radius of the required sphere
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