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storchak [24]
3 years ago
11

Find the surface area of a sphere to the nearest square unit 2inches

Mathematics
2 answers:
arsen [322]3 years ago
8 0

Answer:

The surface area of sphere having 2 inches radius is 50.24 inches²

Step-by-step explanation:

  Given : radius of sphere = 2 inches

We have to find the surface area of the sphere

Surface area of sphere is given by :

A=4\pi r^2

Given radius of sphere is 2 inches

Thus, Surface area of sphere having radius 2 inches is

\Rightarrow A=4\pi (2)^2

Solving, we get,

\Rightarrow A=4\pi 4

\Rightarrow A=16\pi

Using \pi=3.14 , we get

\Rightarrow A=16\times 3.14

\Rightarrow A=50.24

Thus, the surface area of sphere having 2 inches radius is 50.24 inches²

Art [367]3 years ago
4 0

Answer:

50.24 inches² is the surface area of the sphere.

Step-by-step explanation:

we have to find the surface area of the sphere to the nearest square unit 2 inches.

Given: radius of sphere = 2 inches

we have to find the surface area

the formula to find the surface area is given below:

A = 4 π r²

where r represent the radius of sphere

putting r = 2 inches in above formula we get

A = 4π(2)²

solving we get

A = 4 π (4)

A = 16 π

using π = 3.14 we get

A = 16 × 3.14

A =  50.24 inches² is the surface area of sphere.

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Answer:

25π

Step-by-step explanation:

pi's symbol is π, which will be used sometimes to make it easier later

The circumference is equal to diameter multiplied by pi. (Diameter is the length across the circle, radius the center of the circle to an edge point aka. half the diameter, and circumference is the edge length aka. perimeter of the circle.)

We can then remove the pi off the 10, as the diameter multiplied by pi is the circumference, so the diameter is 10.

Half of 10 is 5, the radius.

The formula for area of a circle is radius squared times pi, remember easily by π r ^2

We can plug in the radius into the formula to get

π 5 ^2

And finish it by solving the square root to get

π 25

25π

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