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3 years ago

8

I need help please and thank you

2 answers:

dem82 [27]3 years ago

6 0

So we see that the ratio between the two octagons is 7:1, since 28/4=7 so what we do next is multiply the values of the smaller octagon by 7. But that’s the long way. There’s actually a shortcut by multiplying the perimeter of the smaller octagon, 34, by 7. This in turn equals 238.

vfiekz [6]3 years ago

4 0

Answer:

238

Step-by-step explanation:

you have to find the value of each side;

When the question said it is similar,means that either the image is being enlarged or reduced in size

It is given that if the side is 4 in the smaller octagen,the side will be 28 in the larger octagon

Here you can make a ratio and do propotion like what i did.

After finding all value of the sides,add it all up and you can find the perimeter for the larger octagon

Hope this helps!

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Is 40 a multiple of 8

Natasha2012 [34]

Yes because,
8×1 = 8
8×2 = 16
8×3 = 24
8×4 = 32
8×5 = 40

So 40 is a multiple of 8

4 0

3 years ago

Find the surface area of the figure shown,<br> correct to 2 decimal places.

agasfer [191]

Answer:

$230.73m^2$

Step-by-step explanation:

$A=2a^2+4ah=2*4^2+4*4*4=96m^2$ (square prism)

$A=2\pi rh+2\pi r^2=2*\pi *4*9+2*\pi *4^2 = 326.73m^$ (cylinder)

$326.73-96=230.73m^2$ ( $\frac{3}{4}$ cylinder)

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3 years ago

Ingrown hair on a ferris wheel has a radius of 20 ft how far would you travel in 5 rotation

BartSMP [9]

Answer:

4

Step-by-step explanation:

5 0

3 years ago

Expression of "Eight less than half the sum of 4 and k” into symbol

jolli1 [7]

Answer:

$\frac{4+k}{2} -8$

Step-by-step explanation:

We're going to have to work backwards.

The sum of 4 and k is $4+k$ .

Half is simply that divided by 2.

$\frac{4+k}{2}$

Now, we'll subtract 8 from it.

$\frac{4+k}{2} -8$

Bam!

7 0

3 years ago

The plane flies 725 miles per hour. how many minutes will it take to fly 150 miles

ioda

Answer:

12.41 minutes.

Step-by-step explanation:

It is given in the question that a plane can fly 725 miles per hour.

So, the plane goes 725 miles in 1 hour i.e. 60 minutes.

Now, we have to find the time the plane takes to fly 150 miles.

As the plane is flying at a constant rate, so we can use the unitary method to get the required time.

Therefore, the plane will take $\frac{60 \times 150}{725} = 12.41$ minutes to fly 150 miles. (Answer)

3 0

3 years ago