Search 7,000+ topics

Derivation (Proof) of Surface Area of a Sphere

Read this topic

Explanations 1

Consider a sphere of radius rrr. We would like to find the surface area of this sphere. We know that the volume VVV of the sphere of radius rrr is V=43πr3V=\frac{4}{3}\pi r^3V=3…
By Sujay Kazi

Problems 2

There is a ball of radius 6. What is the surface area of it? (Assume that it is a perfect sphere.)
There is a ball with radius 6. Another ball has radius 15. What is the ratio of the sum of the small ball's surface area and volume to the sum of the big ball's volume and surfa…