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weqwewe [10]
3 years ago
12

Can soemone help meee i give brainlistt

Mathematics
2 answers:
Illusion [34]3 years ago
7 0
First you find the area of the half circle cut out. area of circle is pi*radius² ; therefore the area of half of the circle is that equation divided by two. you get around 39 for the area of the half circle or 25pi/2. then find the area of the triange which is 1/2(base)(height) or 1/2(18)(20)=180

then do 180-(25pi/2) which equals to about 140.73009
Natali5045456 [20]3 years ago
5 0

Answer:

140.74

Step-by-step explanation:

1.area of right triangle

1/2*b*h=1/2*20*18=180

2.area of semi circle

1/2*pi*r^2=1/2*pi*5^2=39.26

r= d/2

180-39.26=140.74

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Find the area of a circle with a circumference of 12.56 units
ElenaW [278]

Answer:

12.56 square units

Step-by-step explanation:

The formula for circumference is

C = 2πr

Our circumference is 12.56.  Using 3.14 for π, we have

12.56 = 2(3.14)r

12.56 = 6.28r

Divide both sides by 6.28:

12.56/6.28 = 6.28r/6.28

2 = r

The area of a circle is given by the formula

A = πr²

Using 3.14 for π and our radius of 2, we have

A = 3.14(2²) = 3.14(4) = 12.56.

4 0
3 years ago
What is the answer to this equation? (1.03×10to the 9)-(4.7×10to the 7)
STALIN [3.7K]

Answer:

                x10000000 • (103x990000000 - 470)

 —————————————————————————————————

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7 0
3 years ago
A gas station customer pumps exactly six gallons
ki77a [65]

Answer:

Please find attached the graph of the relationship between the gallons, g, and cost, C

The relationship between the cost and number of gallons is cost C = $3.25 × Number of gallons, g

Step-by-step explanation:

The given parameters are;

Number of Gallons, g           {}               Cost, C

6           {}                                                 $19.50                               {}                  

22                                                          $71.50

From the given coordinates, we generate the graph using Microsoft Excel, as seen in the attached graph

The given coordinates can be used to find the equation of the relationship in point and slope form as follows;

The slope of the the given coordinates are (71.5 - 19.5)/(22 - 6) = 3.25

The equation of the graph in point and slope form is C - 71.5 = 3.25·(g - 22)

C - 71.5 = 3.25·(g - 22)

C = 3.25·g - 3.25 × 22 + 71.5 = 3.25·g - 0

C = 3.25·g

The relationship between the cost and number of gallons is cost C = $3.25 × Number of gallons, g

From the above equation, we have, that the price per gallon is $3.25

7 0
3 years ago
If y=sin2x+cos2x then dy/dx​
alukav5142 [94]

2(cos2x - sin2x)

Step-by-step explanation:

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