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Serggg [28]
2 years ago
12

Help me one this one​

Mathematics
2 answers:
Tanya [424]2 years ago
8 0

<em><u>ANSWER:</u></em>

<u>A </u><u>=</u><u> </u><u>1</u><u>5</u><u>3</u><u>.</u><u>9</u><u>4</u><u>c</u><u>m</u><u>²</u>

<em><u>EXPLANATION:</u></em>

<em><u>a \:  = \pi \: r {}^{2}  = \pi. {7}^{2}  = 153.93804cm {}^{2}</u></em>

ipn [44]2 years ago
3 0
The answer is 153.86

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Container is shaped like a triangular prism. 3 cm 5 cm
Marianna [84]

ANSWER

A=222\operatorname{cm}

EXPLANATION

A) From the diagram, we see that the base of the triangular face is 4 cm long and the height of the triangular face is 3 cm.

B) From the diagram, we see that the length of two of the rectangular face is 15 cm and the width of the rectangular face is 5 cm.

The third rectangular face has a length of 15 cm and a width of 4 cm.

C) The surface area of the prism is the sum of the areas of the faces of the prism.

The area of a triangle is given as:

A=\frac{1}{2}\cdot b\cdot h

where b = base, h = height

The area of a rectangle is given as:

A=l\cdot w

where l = length, w = width

Therefore, the surface area of the prism is:

\begin{gathered} A=2(\frac{1}{2}\cdot4\cdot3)+2(15\cdot5)+(15\cdot4) \\ A=12+150+60 \\ A=222\operatorname{cm}^2 \end{gathered}

4 0
11 months ago
What is 1920000000 Minutes in Hours?
Vlada [557]

Answer:

<h2>1,920,000,000 Minutes = 32,000,000 Hours</h2>

Step-by-step explanation:

1h=60min\to1min=\dfrac{1}{60}h\\\\\text{therefore}\\\\1,920,000,000min=\dfrac{1,920,000,000}{60}\ h=32,000,000h

7 0
3 years ago
Fitta spends 25 minutes on his rowing machine everyday, except for the weekends. How long will Fitta spend on his rowing machine
andrezito [222]

Answer:

25×20×60 =30000

30000/60=500 hours

4 0
2 years ago
Read 2 more answers
A rental car agency rents cars for $32 per day. They also charge $0.15 per mile driven. If you are taking a 5-day trip and have
xz_007 [3.2K]
So the equation is 32x+0.15y = $250
You know that you’re going to a 5-day trip so you can change x to 5
32(5)+0.15y = $250
You multiply 32 by 5 = 160
$160+0.15y = $250
And to simplify the equation(to make it easier) you subtract 160 on both sides
0.15y = $90
Now you’re trying to find y, so divide 90 by 0.15 to find the maximum of miles you can drive.
y = 600 mi
The maximum amount of miles you can drive is 600

Graph:
I can’t show any pictures sorry
But this is how you do it
Make a number line
Graph 600 with a closed circle, like this: ●
Then make an line going to the left(because you can’t go any more than 600)

Hope this helps! :^)

6 0
3 years ago
A rectangle has a width of x centimeters and a perimeter of 8x centimeters a square has sides of length 1/4 that of the length o
Amanda [17]

Answer:

Part A) The length of rectangle is 3x\ cm

Part B) The perimeter of the square is 3x\ cm

Part C) 20\ cm

Part D) 39\ cm^{2}

Step-by-step explanation:

Part A) Find the length of the rectangle

we know that

The perimeter of rectangle is equal to

P=2(L+W)

we have

P=8x\ cm

W=x\ cm

substitute and solve for L

8x=2(L+x)

4x=(L+x)

L=4x-x=3x\ cm

Part B) Find the perimeter of the square

we know that

The perimeter of a square is

P=4b

we have that

b=(1/4)L

substitute the value of L

b=(1/4)3x=(3/4)x\ cm

Find the perimeter of the square

P=4(3/4)x=3x\ cm

Part C) Find how many cm greater the rectangle's perimeter than the square's perimeter if x=4

<u>Find the value of rectangle's perimeter</u>

P=8x\ cm ------> P=8(4)=32\ cm

<u>Find the value of square's perimeter</u>

P=3x\ cm ------> P=3(4)=12\ cm

<u>Find the difference</u>

32\ cm-12\ cm=20\ cm

Part D) Find how many square cm greater the rectangle's area is than the square's area if x=4

<u>Find the value of rectangle's area</u>

A=(3x)(x)=3x^{2}\ cm^{2} ------> A=3(4^{2})=48\ cm^{2}

<u>Find the value of square's area</u>

A=((3/4)x)^{2}\ cm^{2} ------> A=((3/4)(4))^{2}=9\ cm^{2}

<u>Find the difference</u>

48\ cm^{2}-9\ cm^{2}=39\ cm^{2}

6 0
2 years ago
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