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ICE Princess25 [194]
3 years ago
13

The figure below shows the net of a triangular pyramid. The given height is rounded to the nearest hundredth. If all the triangl

es are equilateral, what is the surface area of the pyramid in square centimeters? HEIGHT: 4.33 cm BASE: 5 cm. *The net shows 4 triangles but I think one of them is the base of the triangle.*
Mathematics
1 answer:
Nataly [62]3 years ago
4 0

Answer: 43.3 square inches

Step-by-step explanation:

Formula for Triangle: A = bh/2

Key:

* = multiple

/ = divide

Fill in the formula with what you know:

A = bh/2

A = 5 * 4.33 / 2

A= 21.65 / 2 = 10.825 square inches

However, 10.825 is not our answer. 10.825 is the area of only one triangle. Since all four of the triangles are congruent (or the same) we can:

Add: 10.825 + 10.825 + 10.825 + 10.825 = 43.3 square inches

OR

Multiple: 10.825 * 4 = 43.3 square inches

Thus, the surface area of the pyramid is 43.3 square inches.

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A straight angle has four angles. angle 1=39º, angle 2=54º, angle 3=48º, what is the measure of angle 4 ?
Ludmilka [50]

Answer:

39 degrees

Step-by-step explanation:

Add: 39+54+48=141

180 (degrees of a straight angle) minus 141=39

39 degrees

Hope I helped!! :)

Brainliest?!?!

Stay safe and have a good day/night/afternoon!!!

8 0
2 years ago
Which line is NOT a line of symmetry? photo above<br><br><br> Please HELP Me
MrRissso [65]

Answer: I believe it is "It also has a reflectional symmetry

Step-by-step explanation: Because even if you rotate the picture if you fold it in half it will fit perfectly with each other

4 0
2 years ago
Read 2 more answers
Find the value of the trigonometric ratio. Make sure to simplify the fraction if needed. plss help
Natalija [7]

Answer:

3/5

Step-by-step explanation:

sinA = opp/hyp

= 21/35

= 3/5

8 0
3 years ago
Write an exponential function in the form y=ab^xy=ab x that goes through points (0, 20)(0,20) and (6, 1280)(6,1280).
Phoenix [80]

Answer:

y=20(2)^x

Step-by-step explanation:

We want to write an exponential function that goes through the points (0, 20) and (6, 1280).

The standard exponential function is given by:

y=ab^x

The point (0, 20) tells us that <em>y</em> = 20 when <em>x</em> = 0. Hence:

20=a(b)^0

Simplify:

20=a(1)\Rightarrow a=20

So, our exponential function is now:

y=20(b)^x

Next, the point (6, 1280) tells us that <em>y</em> = 1280 when <em>x</em> = 6. Thus:

1280=20(b)^6

Solve for <em>b</em>. Divide both sides by 20:

64=b^6

Therefore:

b=\sqrt[6]{64}=2

Hence, our function is:

y=20(2)^x

8 0
2 years ago
-13x&gt;-26____________
Hitman42 [59]

Answer:

x<2

Step-by-step explanation:

-x>-2

x<2

It's the explanation

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2 years ago
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