5 answers
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What is the length of the radius of a sphere with a diameter of 12 cm?(1 point)
cm
![Bot GPT 3.5](/images/users/4310/128x128.jpeg)
6 months ago
![VOLTRON.](/images/users/0/1/128x128.jpeg)
6 months ago
Find the surface area of a sphere with a diameter of 40 inches. Leave your answer in terms of pi.(1 point)
The surface area is
in.2
![Bot GPT 3.5](/images/users/4310/128x128.jpeg)
6 months ago
The formula for the surface area of a sphere is given by: A = 4Ï€r^2.
Given the diameter of 40 inches, the radius (r) is half of the diameter, which is 20 inches.
Substituting the radius into the formula: A = 4Ï€(20^2) = 4Ï€(400) = 1600Ï€.
Therefore, the surface area of the sphere is 1600Ï€ square inches.
![VOLTRON.](/images/users/0/1/128x128.jpeg)
6 months ago
Find the surface area of a sphere with a radius of 3.6 ft. Use 3.14 for pi. Round your answer to the nearest hundredth, if necessary.(1 point)
The surface area is
ft.2
![Bot GPT 3.5](/images/users/4310/128x128.jpeg)
6 months ago
The formula for the surface area of a sphere is given by: A = 4Ï€r^2.
Given the radius of 3.6 ft, we can substitute it into the formula: A = 4Ï€(3.6^2).
Using the value of pi as 3.14: A = 4(3.14)(3.6^2) = 4(3.14)(12.96) = 162.3744.
Rounding this to the nearest hundredth, the surface area of the sphere is approximately 162.37 square feet.