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lara31 [8.8K]
3 years ago
6

FIND AREA ASAP PLEASE

Mathematics
1 answer:
zubka84 [21]3 years ago
5 0

Answer:

\large\boxed{A=(223.3+49\pi)m^2}

Step-by-step explanation:

<em>(look at the picture)</em>

We have:

two halves of circle (whole circle) with radius r = 7m;

the suqare wih length side a = 14m;

the triangle with base b = 14m and hight h = 3.9m.

The formula of an area of a circle:

A_1=\pi r^2

Substitute:

A_1=\pi(7^2)=49\pi\ m^2

The formula of an area of a square:

A_2=a^2

Substitute:

A_2=14^2=196\ m^2

The formula of an area of a triangle:

A_3=\dfrac{bh}{2}

Substitute:

A_3=\dfrac{(14)(3.9)}{2}=(7)(3.9)=27.3\ m^2

The area of a figure:

A=A_1+A_2+A_3\\\\A=49\pi+196+27.3=223.3+49\pi

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The city of new orleans leaves union station in chicago at 6:00 am and travels south to new orleans. the train travels the 930.0
Naddik [55]
Answer: 460.6 miles South of Chicago

Explanation:

1) <span>The City of New Orleans leaves Union Station in Chicago at 6:00 am and travels south to New Orleans. The train travels the 930.0 miles to New Orleans at an average speed of 79.0 miles per hour.

Scheme:


 →to south                                                    ←to north
                |----------------------|---------------------|
               A          x             X      930.0 - x    B
            6:00 am                                          6:00 am
           →                                                      ←
           v = 79.0 mi/h                                     v = 81.1 mi/h


=> x = 79.0 mi/h * t

2) at the same time the City of Chicago leaves New Orleans and travels north to Nhicago. The train travels the 930.0 miles to Chicago at an average speed of 81.1 miles per hour.

930.0 - x = 81.1 mi/h * t

3) How many miles south of chicago do the two trains pass each other?

Divide the two equations:

930.0 - x         81.1*t
------------- =   ----------
      x                 79*t

t cancels out =>

930.0 - x         81.1
------------- =   --------
     x                 79.0

Solve:

81.1x = 79.0(930.0 - x)

81.1x = 79.0 * 930.0 - 79.0x

81.1x + 79.0x = 73,470

=> 160.1x = 73,470

=> x = 73,470 / 160.1

=> x = 460.6 mi

4) Answer 460.6 miles South of Chicago.
</span>
7 0
3 years ago
54 miles is 18% of how many miles?
riadik2000 [5.3K]

Answer:

(set up a ratio)

54/x = 18/100

(cross multiply)

18x = 5400

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x = 300 miles

Step-by-step explanation:

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goldenfox [79]

Answer:

a=25 b=68 c= 12.75 d=100

Step-by-step explanation:

i hope this helped you have a great day luv

3 0
3 years ago
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vovikov84 [41]
Alison has 18 dimes and 7 nickels
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Which is a possible turning point for the continuous function f(x)? (–3, –4) (–2, –1) (0, –5) (1, –8)
katovenus [111]

Answer:

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