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Alex787 [66]
3 years ago
11

A sphere has a radius of 4 inches. What is the surface area of the smallest cube that could circumscribe the sphere?

Mathematics
1 answer:
vovikov84 [41]3 years ago
6 0

Answer:

SA=384\ in^2

Step-by-step explanation:

we know that

The smallest cube that could circumscribe the sphere has a length side equal to the diameter of the sphere

In this problem

The radius of the sphere is r=4\ in

The diameter of the sphere is two times the radius

D=2r=2(4)=8\ in

so

The length side of the cube is

b=8\ in

Remember that

The surface area of a cube is equal to the area of its six faces

so

SA=6b^2

substitute the value of b

SA=6(8)^2

SA=384\ in^2

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