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Helen [10]
3 years ago
15

Find the circumference of a circle whose area is 247 ft2.

Mathematics
1 answer:
gizmo_the_mogwai [7]3 years ago
8 0

Answer:

B is the answer

Step-by-step explanation:

A = πr²

24π = πr²

24 = r²

24 = r²

\sqrt{24} = r

r = \sqrt{4}\sqrt{6} = 2\sqrt{6}

C = 2πr

C = 2π(2\sqrt{6})

C = 4\sqrt{6}π

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7.4x10^-8-6.7x10^-9 please help me I don’t know the answer
postnew [5]

Answer:

Step-by-step explanation:

7.4×10^(-8) - 6.7×10^(-9) = 6.73×10^-8 is 9.05405% smaller than 7.4×10^(-8) = 7.4×10^-8

6 0
3 years ago
A regular pentagon has an apothem of 3.2 m and area of 37.2m2. What is the length of one side of the pentagon?
krok68 [10]
The answer to this question is option B- 4.65
3 0
3 years ago
Orlando invests S1000 at 6% annual interest compounded daily and Bernadette invests S1000 at 170
Ainat [17]

Answer:

So it will only take a year for Orlando's investments be worth more than

Bernadette's investments

Step-by-step explanation:

Interest of Bernadette in a year

=( 1000*170*1)/100

= 1700

So amount at a year is$ 2700

For Orlando amount the end of the year with compound interest daily.

A = P(1+r/n)^nt

A = 1000(1+(17/365))^(365*1)

A = 1000(1+0.0466)^365

A = 1000(1.0466)^365

A= $1.659*10^10

So it will only take a year for Orlando's investments be worth more than

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3 0
3 years ago
A large sphere at an amusement park is 165 feet in diameter which of the following is closest to the volume in cubic feet of the
kramer

Answer:

Below.

Step-by-step explanation:

The volume of a sphere = 4/3 π r^3    where r is the radius.

Here the radius = 1/2 * 165 = 82.5 ft.

So the volume  = 4/3 π (82.5)^3

= 2,352,071.15 ft^3.

8 0
3 years ago
(x - 1)(x + 10)<br> Multiply
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Answer:

x to the second power + 9x -10

Step-by-step explanation:

8 0
3 years ago
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