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Ad libitum [116K]
3 years ago
10

What is the surface area of the triangular pyramid? Use the net of the pyramid to find the surface area.

Mathematics
2 answers:
Sav [38]3 years ago
7 0
What we must do is observe that the triangles have the same measurements.
 We have then that the surface area is:
 A = (4) * (1/2) * (b) * (h)
 Where,
 b: base of the triangle
 h: height of the triangle
 Substituting values:
 A = (4) * (1/2) * (8) * (6.9)
 A = 110.4 cm ^ 2
 Answer:
 
The surface area of the triangular pyramid is:
 
A = 110.4 cm ^ 2
Dafna1 [17]3 years ago
6 0
Each of the triangles making up the sides and base have a base of 8 cm and a height of 6.9 cm. Then the area of the pyramid is that of 4 such triangles.
  A = 4×(1/2)×b×h
  A = 2×(8 cm)×(6.9 cm)
  A = 110.4 cm²

The surface area of the triangular pyramid is 110.4 cm².
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It costs $0.60 per ft² to cover a right triangular field with sod. The side lengths of the field are 300 ft, 400 ft, and 500 ft.
algol [13]
In this triangle, we know base & perpendicular are 300 & 400 'cause 500 is the longest side which is hypotenuse 

Now, Area of a triangle = ab/2 = (300)(400)/2 = 120000/2 = 60000

As cost for 1 ft² = $0.60
cost for 60000 ft² = 60000 * 0.60 = $36000

In short, Your Answer would be Option A

Hope this helps!
8 0
4 years ago
Read 2 more answers
Question 6 of 10
klemol [59]

Answer:

The correct option is C.

Step-by-step explanation:

The quadratic parent function is

f(x)=x^2

The translation is defined as

g(x)=k(x+a)^2+b                 .... (1)

Where, k is vertical stretch, a is horizontal shift and b is vertical shift.

If |k|>1, then graph of parent function stretch vertically by factor |k| and if 0<|k|<1, then parent function compressed vertically by factor |k|. Negative k represents the reflection across x axis.

If a>0, then the graph shifts a units left and if a<0, then the graph shifts a units right.

If b>0, then the graph shifts b units up and if b<0, then the graph shifts b units down.

The graph shift 1 unit right,vertically stretch by a factor of 5 , reflect over the x-axis. So, a=-1, |k|=5 and k=-5

Substitute a=-1 and k=5 in equation (1).

g(x)=-5(x+(-1))^2+(0)

g(x)=-5(x-1)^2

Therefore the correct option is C.

3 0
2 years ago
What is the sum of the measures of the interior angles of a decagon?​
Dafna11 [192]

Answer:

1,440 degrees (10 interior angles of 144 degrees)

Step-by-step explanation:

4 0
3 years ago
Did I do this right or wrong help pleaseee
diamong [38]

Answer:

You did right

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
HELP NEEDED SO YEAH LIKE CAN SOMEONE HELP MEEEEEE
Novosadov [1.4K]
It’s b because it has a relationship between x and y
8 0
3 years ago
Read 2 more answers
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