Question

define the surface area of sphere radius'a'​

Answer 1

Step-by-step explanation:

It can be characterized as the set of all points located distance r (radius) away from a given point (center). It is perfectly symmetrical, and has no edges or vertices. A sphere with radius r has a volume of 4 3 π r 3 \frac{4}{3} \pi r^3 34πr3 and a surface area of 4 π r 2 4 \pi r^2 4πr2.

Answer 2

$\huge\mathfrak\green{Answer:-}$

Its surface area will be πr²h