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3 years ago

What is the area of the regular octagon below?

Mathematics

2 answers:

pishuonlain [190]3 years ago

3 0

9 plus How many sides nine times

Andrei [34K]3 years ago

3 0

If I had to take a rough guess using online work; the answer would be the 2nd one. Use the formula of a octagon using circumradius.

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Please show ur work

Fiesta28 [93]

B. 1/7 i just took the test and thats what i got hope it helps

3 0

3 years ago

The object below was made by placing a cone on top of a cylinder. The base of the cone is congruent to the base of the cylinder.

Ber [7]

Answer:

Part 1) The volume of the object is $32\pi\ cm^{3}$ or $100.48\ cm^{3}$

Part 2) see the procedure

Step-by-step explanation:

The picture of the question in the attached figure

Part 1) What is the volume, in cubic centimeters, of the object?

we know that

The volume of the object is equal to the volume of the cylinder plus the volume of the cone

Find the volume of the cone

The volume of the cone is equal to

$V=\frac{1}{3}\pi r^{2} h$

we have

$r=4/2=2\ cm$ -----> the radius is half the diameter

$h=3\ cm$

substitute the values

$V=\frac{1}{3}\pi (2^{2})(3)=4\pi\ cm^{3}$

Find the volume of the cylinder

The volume of the cylinder is equal to

$V=\pi r^{2} h$

we have

$r=4/2=2\ cm$ -----> the radius is half the diameter

$h=(10-3)=7\ cm$

substitute the values

$V=\pi (2^{2})(7)=28\pi\ cm^{3}$

Part 2) Then explain how you found the volume of the total shape

The volume of the total shape is equal to the volume of the cylinder plus the volume of the cone

$4\pi\ cm^{3}+28\pi\ cm^{3}=32\pi\ cm^{3}$ ------> exact value

Find the approximate value of the volume

assume

$\pi=3.14$

$32(3.14)=100.48\ cm^{3}$

7 0

3 years ago

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8 3/5 - 1 3/10 = ? this is fractions

Semenov [28]

1) $8 \frac{3}{5} - 1 \frac{3}{10}$

2) $8 \frac{6}{10} - 1 \frac{3}{10}$ =

3) $7\frac{3}{10}$

Answer
$7 \frac{3}{10}$

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3 years ago

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What is the equation of the line that passes through the points (-1 , 3/2) and (1/2 , 1/2 )

Simora [160]

Answer:

y = -2/3x + 5/6 (slope intercept) (y = ax + b)

4x + 6y = 5 (standard form) (Ax + By = C)

y - 3/2 = -2/3(x + 1) (point slope) (y-y1 = m(x-x1)) (m = y2 - y1 / x2 - x1)

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6 0

3 years ago

2 easy questions, 6th grade

Gnoma [55]

Answer:

36 and 6. 2.

Step-by-step explanation:

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3 years ago

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