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Mashcka [7]
2 years ago
8

5. What is the surface area of this triangular pyramid?

Mathematics
1 answer:
Zielflug [23.3K]2 years ago
6 0
Answer: 5cm




Heiwlqmrbeh
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If the angle of elevation of the sun is 61.7° when a building casts a shadow of 56.5 feet, what is the height of the building ro
maksim [4K]

SOLUTION

Let us use a simple diagram to interprete the question

In the diagram above, the dark stuff below represents the shadow and the rectangular bar represents the building. I have labelled the height of the building as h.

So we will use the right-angled triangle formed to find h

As we can see h represents the opposite side and 56.5 feet represents the adjacent side of the right-angle triangle. So we will use TOA

\text{TOA tan }\theta=\frac{opposite}{\text{adjacent}}

So we have

\begin{gathered} \text{ tan }\theta=\frac{opposite}{\text{adjacent}} \\ \text{ tan }61.7\degree=\frac{h}{56.5} \\ 1.8572015=\frac{h}{56.5} \\ \text{cross multiplying, we have } \\ h=1.8572015\times56.5 \\ h=104.931887 \end{gathered}

Hence the answer is 104.9 feet to the nearest tenth

4 0
9 months ago
What's the square root of 0.4 repeating
avanturin [10]
The answer depends on knowing that 0.4444.... is equal to 4/9; 
<span>the square root of 4/9 is 2/3 = 0.6666....</span>
6 0
3 years ago
Pls help me with my work
irakobra [83]
The answer is D 2n-11
3 0
2 years ago
Read 2 more answers
Lisa wrote the following statement: "You can only draw one unique isosceles triangle that contains an angle of 65°." Which state
JulijaS [17]
Triangles always equal 180 degrees

4 0
3 years ago
The irrational number square root 67 is greater than [blank]
Tanya [424]

Answer:

The irrational number square root 67 is greater than whole number 8

Step-by-step explanation:

Given

\sqrt{67

Required

Complete the sentence

No options are given.

So, we will solve the expression then compare it with the nearest smallest integer

First, we solve the given expression

\sqrt{67

\sqrt{67} \approx 8.185

By comparison:

8.185 > 8

<em>This implies that, the blank will be completed with 8</em>

3 0
2 years ago
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