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3 years ago

What is the total surface area of this square pyramid?

Mathematics

1 answer:

slamgirl [31]3 years ago

4 0

Answer:

The total surface area of this square pyramid is $297\ mm^{2}$

Step-by-step explanation:

we know that

The surface area of a square pyramid is equal to

$SA=b^{2} +4[\frac{1}{2}(b)(h)]$

we have

$b=9\ mm$ ----> the length side of the square base

$h=12\ mm$ ----> the height of the triangular faces

substitute the values

$SA=9^{2} +4[\frac{1}{2}(9)(12)]=297\ mm^{2}$

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A nature museum has 2008 specimens of early birds, some with 222 wings and some with 444 wings. The specimens have a total of 40

ludmilkaskok [199]

Let's assume

number of birds with 2 wings is x

number of birds with 4 wings is y

A nature museum has 2008 specimens of early birds

so,

$x+y=2008$

Total of wings of 2 wings bird =2x

Total of wings of 4 wings bird =4y

The specimens have a total of 4384 wings

so, we get

$2x+4y=4384$

we can divide both sides by 2

$x+2y=2192$

so, we get system of equations as

$x+y=2008$

$x+2y=2192$

we can solve for x and y

We can subtract both equations

$2008-y+2y=2192$

$y=184$

$x=2008-184$

$x=1824$

$y=184,\:x=1824$

so,

number of birds with 2 wings is 1824

number of birds with 4 wings is 184.............Answer

5 0

3 years ago

Suppose that an individual has a body fat percentage of 16.8% and weighs 152 pounds. How many pounds of his weight is made up of

natka813 [3]

<h3>Answer: 25,5 p</h3>

Step-by-step explanation:

16 , 8 % = ? p
100% = 152 p

$\pmb {? =\dfrac{152\cdot 16, 8}{100}=25, \underline 536 p\approx25,5 p }$

4 0

3 years ago

Every 1 have a great day. If sum 1 pull you down get back up<br><br><br> Have a good day

dmitriy555 [2]

Answer:

I hope you have a great day too

4 0

2 years ago

25a^2-30a+9 factor ?

CaHeK987 [17]

Factor 25a2−30a+9

25a2−30a+9

=(5a−3)(5a−3)

Answer:

(5a−3)(5a−3)

4 0

3 years ago

B = 2c + 6 what is the function?

Leya [2.2K]

Answer:

2c put me as brainlest

Step-by-step explanation:

Let's solve for c.

b=2c+6

Step 1: Flip the equation.

2c+6=b

Step 2: Add -6 to both sides.

2c+6+−6=b+−6

2c=b−6

Step 3: Divide both sides by 2.

b−6

b−3

Answer:

b−3

now if ur just looking for the funtipn the asnwer would be 2c i think

7 0

3 years ago

Read 2 more answers