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Pepsi [2]
3 years ago
8

Find the area of a regular octagon with an apothem of 8.45 cm and a side length of 7 cm. (round to the nearest whole number) A)

59 cm2 B) 118 cm2 C) 237 cm2 D) 473 cm2
Mathematics
1 answer:
Alexeev081 [22]3 years ago
5 0

Answer:

237

Step-by-step explanation:

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before the use of calculators, mathematicians developed and used detailed tables of values of the sine, cosine and tangent ratio
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Answer:

the answer is  bc of my knowledge XD XD XD hahaha

Step-by-step explanation:

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3 0
3 years ago
A rectangular solid with a square base has a volume of 4096 cubic inches - determine the dimensions that yield the minimum surfa
Bumek [7]

Answer:

side of base, a = 10.1 inches, height, h = 40.1 inches

Step-by-step explanation:

Volume of rectangular solid, V = 4096 cubic inches

Let the side of base is a and the height is h.

V = a^2h\\\\4096 = a^2 h ..... (1)

surface area of the solid  

S = 2a^2 + 4 ah \\\\S = 2a^2 + 4 \times a \times \frac{4096}{a^2}    from (1)\\\S = 2a^2 + \frac{4096}{a}\\\\\frac{dS}{da}= 4 a - \frac{4096}{a^2}\\\\4 a - \frac{4096}{a^2} = 0 \\\\a^3 = 1024\\\\a =10.1 inches

So, h = 40.2 inches

5 0
3 years ago
You invest $350 in an account with an interest rate of 1.2% compounded continuously. How much money would be in the account afte
In-s [12.5K]
You will get about 1300 a year

6 0
3 years ago
Good answer fast Find the value of y
Radda [10]

Answer: y = 90°

Step-by-step explanation:

55.30786941 = sin-1 (148/180)   round to 55.3°  angle x

34.69213059 = cos-1 (148/180) . round to 34.7°  "angle z" at right

34.7 +55.3 = 90

Sum of All angles of the triangle = 180°  180 -90 = 90

If angle x is 55.7 and angle z is 34.7° Angle y must be 90°

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7 0
3 years ago
Write the equation of this line in point-slope form and slope-
DaniilM [7]

Answer:

y = -1x + 2

Step-by-step explanation:

y = -1x + b

5 = -1(-3) + b

5 = 3 + b

2 = b

y = -1x + 2

3 0
3 years ago
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