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Elina [12.6K]
3 years ago
13

What is the surface of a sphere with a radius of 13 units?

Mathematics
2 answers:
ZanzabumX [31]3 years ago
7 0

Sphere = 4PiRsquared

Radius = 13

13 x 13 = 169

169 x 4= 676 Pi

5e surface is 676Pi

Bumek [7]3 years ago
5 0

Answer:

The correct answer is option B.   676π units²

Step-by-step explanation:

<u>Formula:- </u>

The surface area of a sphere = 4πr²

Where r is the radius of sphere

<u>To find the surface area of given sphere </u>

Here r = 13 units

Surface area = 4πr²

 = 4 * π * 13²

 = 4 * π * 169 = 676π units²

Therefore the  correct answer is option A.   676 units²

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Answer:

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Step-by-step explanation:

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In triangle △ABC, ∠ABC=90°, BH is an altitude. Find the missing lengths. AC=5 and BH=2, find AH and CH.
Yakvenalex [24]

Answer:

  AH = 1 or 4

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Step-by-step explanation:

An altitude divides a right triangle into similar triangles. That means the sides are in proportion, so ...

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The problem statement tells us AH + CH = AC = 5, so we can write

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3 0
3 years ago
Solve the equation 4x - 6 = x + 3. Check your solution.
eimsori [14]
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