Question

Find the diameter of a sphere whose surface area is 154m^2.​

Answer 1

Answer:

Let r be the radius of the sphere.

Given that, Surface area of sphere=154m^2

4πr^2=154

4×22/7×r^2=154

gives r^2=154×1/4×7/22

hence, r^2=49/4 we get r=7/2

Therefore, diameter is 7m.

Step-by-step explanation:

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Answer 2

Answer:

Let r be the radius of the sphere.

Given that, Surface area of sphere = 154m^2

4π^2 = 154

4 × 22 / 7 × r^2 = 154

Gives r^2 = 154 × 1/4 × 7/22

Hence, r^2 = 49/4 we get r = 7/2

Therefore, diameter is 7m.

Step-by-step explanation:

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