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Nataly_w [17]
2 years ago
12

If the surface area of a sphere is 6,644.24 cm squared, what is the radius of the sphere. Use 3.14 for pi.

Mathematics
1 answer:
Mama L [17]2 years ago
5 0

Answer:

r = 22.99 cm

Step-by-step explanation:

sphere surface area = 4πr²

6644.24 = 4 (3.142)r²

6644.24 = 12.568r²

arrange it by change the position to solve it easier

12.568r² = 6644.24

r² = 528.6632718

r = square root 528.6632718

r = 22.99 cm

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Answer:

(x-5)^2+(y+7)^2=49

Step-by-step explanation:

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Tom [10]

Given:

A committee of 6 members is to be chose from the 100 members of the U.S. senate.

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The number of ways to form a committee.

Solution:

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^nC_r=\dfrac{n!}{r!(n-r)!}

Number of ways to select 6 members from total 100 members is

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^{100}C_6=\dfrac{100\times 99\times 98\times 97\times 96\times 95\times 94!}{6\times 5\times 4\times 3\times 2\times 1\times 94!}

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Therefore, the total number of ways to form a committee is ^{100}C_6, i.e., equal to 1192052400.

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