Question
Use the formula: Surface Area of Sphere = 4πr ²the surface area of a sphere is 7.84πft² what is the radius of this sphere
2.8 ft.
1.4 ft.
3.2 ft
4.4 ft
2.8 ft.
1.4 ft.
3.2 ft
4.4 ft
Answers
Answered by
GPT 3.5
The correct answer is 1.4 ft.
To find the radius, we set up the equation:
4πr² = 7.84π
Dividing both sides of the equation by 4π, we have:
r² = 1.96
Taking the square root of both sides, we have:
r = 1.4 ft.
To find the radius, we set up the equation:
4πr² = 7.84π
Dividing both sides of the equation by 4π, we have:
r² = 1.96
Taking the square root of both sides, we have:
r = 1.4 ft.
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