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damaskus [11]
3 years ago
5

Find the total surface area of this triangular prism, 30 cm 18 cm 7 cm 24 cm

Mathematics
1 answer:
andriy [413]3 years ago
7 0
Add them all up then divide then by 4 you will get 19.75cm
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The diagram shows a vertical tower DC on a horizontal ground ABC.
sasho [114]
The measure of ABD=180°- 54°=26°
and then the measure of ADB= x
and x + 26° + 28°= 180°, sum of anlgle in a triagle property
 it means x= 180°- 26-28=126°
application of sinus law in the triangle

sin 28 / BD = sin 126/ AD = sin 26/ 25 so we can deduce that 

AD= 25sin126 / sin26= 46.12
let 's consider the triangle ADC, so for finding h, we have sin 28 = h / AD
and then h = AD x sin28=21.65

<span>Calculate the height of the tower is 21.65</span>

6 0
3 years ago
X²+2xy+y²=144, (x+y)³?​
Bumek [7]

Answer:

The value of (x + y)³ is 1728.

Step-by-step explanation:

First, you have to find the value of x + y :

x² + 2xy + y² = 144

x² + xy + xy + y² = 144

x(x + y) + y(x + y) = 144

(x + y)(x + y) = 144

(x + y)² = 144

x + y = √144

x + y = 12

Next, the value of (x + y)³ :

(x + y) = 12³ = 1728

5 0
3 years ago
Read 2 more answers
Expand -8(4p-7) please
Artemon [7]

Answer:

-32p+56

Step-by-step explanation:

-8*4p=-32p

-7*-8=56(negative times negative =positive)

-32p+56

3 0
2 years ago
Read 2 more answers
Can someone help me with this please and thank you!
aliya0001 [1]

Answer: b

Step-by-step explanation:

8 0
1 year ago
56 ÷ 4 i need help please help me asap
PtichkaEL [24]

Answer:

14

Step-by-step explanation:

56/4=14

Check

14*4=56

4 0
2 years ago
Read 2 more answers
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