Question

--- --- find the radius of a square whose surface area is 154 cm2​

Answer 1

Step-by-step explanation:

Given: The surface area of a sphere is 154 cm2.

The surface area of the sphere of radius r, SA = 4πr2.

The surface area of the sphere = 154 cm2

4πr2 = 154 cm2

r2 = 154/4π

r2 = (154/4) (7/22)

r2 = (154 × 7) / (4 × 22)

r2 = (49/4)

r = (7/2) = 3.5 cm

Thus, the radius of the sphere whose surface area is 154 cm2 is 3.5 cm.

Answer 2

Answer:

4*227*r2

Step-by-step explanation:

cm2.

=4πr2.

154=4×227×r2