Question

How πd². Comes ..... hex djhhwuj hjekdowolckfkfkdkddd

Answer 1

Answer:

Since, the TSA of Sphere is 4πr^2..

It can be written as 2×r×2×r×π.....

So, 2r means diametre.....

Therefore,

d×d×π.....

= πd^2….......