Eduprobe
Question:
Find the radius of a sphere whose surface area is 154cm²
Solution:
Let x be radius ⇒Surface Area=154cm² ∴4πx²=154 ⇒x²=154 × 7/4 × 22/7 =49/4 ⇒x=√49/4 x=3.5cm
Let x be radius ⇒Surface Area=154cm² ∴4πx²=154 ⇒x²=154 × 7/4 × 22/7 =49/4 ⇒x=√49/4 x=3.5cm