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प्रश्न
Find the radius of the sphere whose surface area is equal to its volume .
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उत्तर
Surface area = volume
⇒ `4pir^2 = 4/3pir^3`
⇒ `3r^2 = r^3`
⇒ r = 3
Radius of the sphere = 3 units
संबंधित प्रश्न
The surface area of a solid metallic sphere is 2464 cm2. It is melted and recast into solid right circular cones of radius 3.5 cm and height 7 cm. Calculate:
- the radius of the sphere.
- the number of cones recast. (Take π = `22/7`)
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