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hram777 [196]
3 years ago
7

Find the surface area of a sphere with a radius of 10 in. Express your answer in terms of π.

Mathematics
1 answer:
Sati [7]3 years ago
4 0

Given:

Radius of the sphere = 10 in

To find:

The surface area of a sphere

Solution:

Surface area of sphere:

SA =4\pi r^2

SA =4\times \pi \times 10^2

SA=\pi \times 400

SA=400\pi in²

The surface area of a sphere is 400π in².

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Step-by-step explanation:

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<span>LINE (an undefined term) </span>
<span>In geometry, a line has no thickness but its length extends in one dimension and goes on forever in both directions. A line is depicted to be a straight line with two arrowheads indicating that the line extends without end in two directions. A line is named by a single lowercase written letter or by two points on the line with an arrow drawn above them. </span>

<span>PLANE (an undefined term) </span>
<span>In geometry, a plane has no thickness but extends indefinitely in all directions. Planes are usually represented by a shape that looks like a tabletop or wall. Even though the diagram of a plane has edges, you must remember that the plane has no boundaries. A plane is named by a single letter (plane m) or by three non-collinear points (plane ABC). </span>

<span>Undefined terms can be combined to define other terms. Noncollinear points, for example, are points that do not lie on the same line. A line segment is the portion of a line that includes two particular points and all points that lie between them, while a ray is the portion of a line that includes a particular point, called the end point, and all points extending infinitely to one side of the end point. </span>

<span>Defined terms can be combined with each other and with undefined terms to define still more terms. An angle, for example, is a combination of two different rays or line segments that share a single end point. Similarly, a triangle is composed of three noncollinear points and the line segments that lie between them. </span>

<span>Everything else builds on these and adds more information to this base. Those added things include all the theorems and other "defined" terms like parallelogram or acute angle. </span>
8 0
3 years ago
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luda_lava [24]

Answer:

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Step-by-step explanation:

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