Question

what will be the diameter of sphere whose surface area is 55.44m ²​

Answer 1

Step-by-step explanation:

d≈1.32

hope it's helpful for you

Answer 2

The diameter of the sphere is 4.2m.

Given: Surface area of the sphere = 55.44m ²​

To Find: The diameter of the sphere

Solution:

The surface area of a sphere is given as

SA = 4πr², where SA is the surface area, r is the radius of the sphere

Let us assume that the radius of the sphere is r

On placing the values in the formula, we get

55.44 = 4 x π x r²

55.44 = 4 x $\frac{22}{7}$ x r²

55.44 x 7 = 4 x 22 x  r²

2.52 x 7 = 4  r²

0.63 x 7 =  r²

4.41 =  r²

$\sqrt{4.41}$ = r

r = 2.1m

Diameter = radius x 2

Diameter = 2 x 2.1

                = 4.2m

Therefore, the diameter of the sphere is 4.2m.