MATHEMATICS COLLEGE

How to compute the area of a circle

Answers

Answer 1

Answer:

Answer:

$A = \pi r^2$

Step-by-step explanation:

Area of a circle =

$\pi * r^2\n\n=\pi r^2$

Area of a circle can also be calculated with ;

1. Using Radius to Find Area

2. Calculating Area from the Diameter

3. Using Circumference to Calculate Area

4. Finding Area from a Sector of the circle.

Related Questions

Evaluate the indefinite integral as a power series f(x) = 1 tan-1(x7) dx n=0 What is the radius of convergence R? R= -/0.77 points Evaluate the indefinite integral as a power series x7 In(1 x) dx f(x) = C + n=0 What is the radius of convergence R?
I need an explanation so I can understand this because am very confused
Write a sentence for the equation x^3=2(y+3)
Pls help, and don’t give random answers just so you can have points.
Leo dug up 6 4/5 pounds oftreasure on his first dig. Anne dugup 4 1/2 pounds of treasure. Howmuch more treasure did Leo digup than Anne?

When a water-cooled nuclear power plant is in operation, oxygen in the water is transmuted to nitrogen-17. After the reactor is shut down, the radiation from the nitrogen-17 decreases in such a way that the rate of change in the radiation level is directly proportional to the radiation level.Required:
Write a differential equation that expresses the rate of change in the radiation level in terms of the radiation level.

Answers

Answer:

The differential equation is $(dR)/(dt) = -kR$

Step-by-step explanation:

Differential equation for the rate of change in radiation level:

Radiation level is R.

Rate of change indicates that the radiation level R varies in function of time t, which mathematically means that we have:

$(dR)/(dt)$

After the reactor is shut down, the radiation from the nitrogen-17 decreases in such a way that the rate of change in the radiation level is directly proportional to the radiation level.

Rate of change is k. Decreases means that k is negative. Proportional to the radiation level of R means that -k multiplies R. So the differential equation is:

$(dR)/(dt) = -kR$

Which equation show the relationship in the table?

Answers

Answer:

hours = 5 x dollars

Step-by-step explanation:

Because, for every hour you earn 5 dollars.

Hours =5 help this hope

Find the area of a parallelogram if a base and corresponding altitude have the indicated lengths. Base 1 1/2 feet, altitude 6 inches. Area = sq. ft. ...?

Answers

area of a parallelogram = A =base*height

so in this case is just (1½)(6).

first off let's convert the mixed fraction to "improper",

$\bf \stackrel{mixed}{1(1)/(2)}\implies \cfrac{1\cdot 2+1}{2}\implies \stackrel{improper}{\cfrac{3}{2}} \n\n\n \cfrac{3}{2}\cdot 6\implies \cfrac{18}{2}\implies 9$

Answer:

3/4 sq. ft.

Step-by-step explanation:

The question is using feet and inches. So, you'd have to convert the 6 inches to feet. How many inches in one foot? 6. So 6=1/2 feet so you do 1 1/2*1/2=3/4

A car has 4 wheels There are 21 cars. How many wheels are there?A.48 B.64 C.84 D.74

Answers

Answer:

Step-by-step explanation:

total number of wheels=4*21=84

Which statements are true? Select three options. The line x = 0 is perpendicular to the line y = –3. All lines that are parallel to the y-axis are vertical lines. All lines that are perpendicular to the x-axis have a slope of 0. The equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. The equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.

Answers

Answer:

The first option you gave, fourth one, fifth one. This is what I think, the question is formatted badly and hard to read.

Step-by-step explanation:

Answer:

1,4,5

Step-by-step explanation:

Abigail has $400 in her savings account. She wants to keep at least $160 in the account.She withdraws $40 each week for food. Write and solve an inequality to show how many
weeks she can make withdrawals from her account.

Answers

Answer:

400-40x x=6

Step-by-step explanation:

400 in total. minus 40 each week (x)

40 × 6= 240

400-240=160

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Giuseppe is studying shark attacks around the world and finds that most such attacks occur during the day. He concludes that sharks usually do not eat at night. This conclusion is A) not justified, since sharks can't tell day from night. B) justified, since he studied attacks from all around the world. C) not justified, since people usually swim in the ocean during the day. D) justified, assuming that the sharks finish eating their kills before sunset.