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3 years ago

Find the surface area of this shapePLS HELP, AM NEEDING TO TURN THIS IN, IN LIKE AN HOUR

Mathematics

1 answer:

Inessa05 [86]3 years ago

3 0

Answer:

48.25

Step-by-step explanation:

When finding an area of a triangle it is area = base times height divided by 2.

AKA a =bh1/2

We can do that for all sides in this equation.

For the bottom we can do:

5*4.3=21.5 21.5/2 = 10.75

For one side we can do:

5*5 = 25 25/2 = 12.5

12.5 = one side, but there are three so,

12.5*3 = 37.5

37.5 + 10.75 = 48.25

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If the ratio of radius of two spheres is2:3 what is the ratio of their volumes

labwork [276]

Answer:

8:27

Step-by-step explanation:

1 way to do it is...

The volume of a sphere is 4/3*pi*r^3. Plugging in 2 and 3 in for the radii you get the volumes are about 33.51 and 113.1, which is an 8:27 ratio.

Another way to do it is...

The ratio of the radii is 2:3 and a radius is 1-dimensional. The volume, however is 3-dimensional. To get from 1-D to 3-D, you have to cube the numbers. 2^3 is 8 and 3^3 is 27, so the ration is 8:27.

3 0

3 years ago

Read 2 more answers

Select the decimal that is equivalent to<br> 57<br> 220

Umnica [9.8K]

Answer:

2.5909090909

Step-by-step explanation:

4 0

3 years ago

n 2000 the population of a small village was 2,400. With an annual growth rate of approximately 1.68%, compounded continuously,

Nitella [24]

Answer:

The population would be 3358

Step-by-step explanation:

Since, exponential growth function if the growth is compound continuously,

$A = Pe^{rt}$

Where,

P = initial population,

r = growth rate per period,

t = number of periods,

Given,

The population in 2000, P = 2,400,

Growth rate per year = 1.68% = 0.0168,

Number of years from 2000 to 2020, t = 20,

Thus, the population in 2020,

$A=2400 e^{0.0168\times 20}$

$=2400 e^{0.336}$

$= 3358.4136$

$\approx 3358$

6 0

3 years ago

A new Neighborhood Activity Complex is being built in Safe Harbor. The perimeter of the rectangular playing field is 486 yards.

siniylev [52]

Answer:

the two lengths= 194 each side

teh two widths= 49 on each side

194+194+49+49= 486

Step-by-step explanation:

486= 2l+2w

l=4w-2

486-2w=2l -divide that by 2

243-w=l

243-w=4w-2

245=5w -divide that by 5

49=w

l=4(49)-2

l=194

w=49

6 0

4 years ago

Hannah can complete 4 math problems per minute.write and solve a direct variation equation to find how many math problems she ca

scoundrel [369]

15 x 4 = 60
Hope this helps!

4 0

4 years ago

Find the surface area of this shapePLS HELP, AM NEEDING TO TURN THIS IN, IN LIKE AN HOUR​

Find the surface area of this shapePLS HELP, AM NEEDING TO TURN THIS IN, IN LIKE AN HOUR