Question

Find the surface area of sphere whose surface area is 154cm².
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Answer 1

Answer:

I think the question is wrong. It should be

FIND THE RADIUS OF SPHERE WHOSE SURFACE AREA IS 154cm²

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.

Hope you check the question again.

Thank you.

Answer 2

Answer:

The surface area of a sphere is 154 cm2. The surface area of the sphere of radius r, SA = 4πr2. Thus, the radius of the sphere whose surface area is 154 cm2 is 3.5 cm.