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Novay_Z [31]
3 years ago
12

The surface area of a sphere is found using the formula , where r is the radius. If the surface area of a sphere is 64 square fe

et, what is the radius, in feet? A. –4 B. 16 C. 4 D. –16
Mathematics
1 answer:
Nadusha1986 [10]3 years ago
8 0

Answer:

It should be C,  I believe?

Step-by-step explanation:

The surface area of a sphere can be found by the formula: A=4πr²

If the area is 64 square feet.  -----> square feet means doubled

A=64² = 4096 feet

4096 =4πr²   (divide 4π on both sides)

4096 ÷4π = 1024π

1024π = r²  (square root r on both sides)

r = 56.718523229


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7 0
3 years ago
Write the quadratic equation whose roots are six and -2 and who’s leading coefficient is 3 use the letter X to represent the var
Artist 52 [7]

Answer:

3X^{2} - 12X - 36 = 0

Step-by-step explanation:

6 and - 2 are the only two solutions to the required quadratic equation.

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6 0
3 years ago
2 1/2 1 1/16 = 3 1/16 3 1/2 3 9/16 3 3/16
amm1812
2 1/2     = 2 8/16

so

2 8/16  + 1 1/16    = 3 9/16

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3 0
3 years ago
What is the least common denominator for adding the fractions 4/15, 1/12, and 3/8
il63 [147K]
I think you want the least common multipule (exg LCM of 2,3,4 is 12)

so we find the factors and include all of them so like this

15=3 times 5
12=2 times 2 times 3
8=2 times 2 times 2

so to include all of them we include 3 2's, 1 3 and 1 5 or 2 times 2 times 2 times 3 times 5 or 8 times 15 or 4 times 30 or 120

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5 0
3 years ago
Read 2 more answers
Please help me on this will give you brainliest
enyata [817]

Answer:

135 x 10^7

Step-by-step explanation:

27(5 x 10^7)

probably check before turning in

7 0
3 years ago
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