Question

the surface area of sphere is 1386 cm^2 find the radius of the sphere​

Answer 1

Answer:

$\huge\mathfrak\blue{Solution..}$

We know that formula for surface area of a sphere is: 4πr^2 [r =radius]

Then, 4πr^2 =1386 cm^2

or, 4r^2π =1386

or, 4r^2 ×3.14 =1386

or, 4r^2 =1386/3.14

or, 4r^2 =441.401

or, r^2 =441.401/4

or, r^2 =110.35

or, r =√110.35

So, r =10.505(Approx.)

So radius of the sphere is:

10.505 cm(Approx.)

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