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gtnhenbr [62]
3 years ago
10

A room has a volume of 90cm3 if it is 5cm high calculate the area of the floor of the room​

Mathematics
1 answer:
Talja [164]3 years ago
7 0
Answer =18cm^2
Where by
A=L*W
Vol=[L*W]*H
90cm^3=A*5
90=5A
90/5=5A/5
A=18cm^2
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I have no idea how to even begin with this
Leviafan [203]
We have two similar triangles, the one as a whole and the one inside of it. To calculate the height of the flagpole we can set up a proportion. First calculate the length of the base of the smaller triangle.

16.60 - 12.45 = 4.15m

The height is 1.65m, set up a proportion:

\sf\dfrac{1.65}{4.15}=\dfrac{x}{16.60}

Cross multiply:

\sf 27.39=4.15x

Divide 4.15 to both sides:

\sf x=\boxed{\sf 6.6m}

So the height of the flagpole is 6.6 meters tall.

5 0
3 years ago
What is 163.28 + 75.459 = ​
sergeinik [125]

The expression 163.28 + 75.459 is a sum expression, and the result of 163.28 + 75.459 is 238.739

<h3>How to solve the expression?</h3>

The expression is given as:

163.28 + 75.459

The expression is best solved using a calculator.

However, in the absence of a calculator, the following steps can be applied.

Expand each term

163.28 + 75.459 = 163 + 0.28 + 75 + 0.459

Reorder the terms

163.28 + 75.459 = 163 + 75+ 0.28  + 0.459

Add the decimals and integers

163.28 + 75.459 = 238.739

Hence, the result of 163.28 + 75.459 is 238.739

Read more about sum expressions at:

brainly.com/question/4344214

#SPJ1

5 0
2 years ago
Given the values of x and y find the exact (fraction) values of all six trig ratios
Anna35 [415]

Answer:

Step-by-step explanation:

Distance of (-3,4) to origin = √((-3)^2+4^2) = 5

sinθ = 4/5

cosθ = -3/5

tanθ = 4/(-3) = -4/3

cscθ = 1/sinθ = 5/4

secθ = 1/cosθ = -5/3

cotθ = 1/tanθ = -3/4

4 0
3 years ago
Please help !!! I need help with all.
alexira [117]

5 is not a function because if you draw a vertical line then it touches twice which is not a function

6 is a function

7 is not a function because there are 2 of the same inputs

8 is a function because it passes the vertical line test

9 is not a function

10 is a function

Hopefully that helped!


7 0
3 years ago
Read 2 more answers
Find the angles of a parallelogram in which an exterior angle is one-third that its interior angle.​
iogann1982 [59]

Answer:

The angles of a parallelogram are 135°-45°-135°-45°

Step-by-step explanation:

we know that

In a parallelogram opposites angles are congruent and consecutive angles are supplementary

Remember that  

The sum of a exterior angle and its interior angle is equal to 180 degrees

Let

x ----> the measure of one interior angle of parallelogram

y ----> the measure of the other interior angle of  parallelogram

we have that

x+\frac{x}{3}=180^o

solve for x

\frac{4}{3}x=180^o\\\\x=(180^o)3/4\\\\x=135^o

<em>Find the measure of the other interior angle of parallelogram</em>

Remember that consecutive interior angles are supplementary

x+y=180^o

substitute the value of x

135^o+y=180^o

solve for y

y=45^o

therefore

The angles of a parallelogram are 135°-45°-135°-45°

3 0
3 years ago
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