MATHEMATICS HIGH SCHOOL

A metal washer is made by cutting out a circle 13.2 mm in diameter from a larger circle. To the nearest tenth, what is the area of the washer

Answers

Answer 1
Answer: The standard formula of area of the circle is (pi * r^2)
here r is radius.

So the radius of this washer is equal to 6.1 mm (13.2 / 2)
Therefore the area of the washer
pi * 6.1^2
116.9 mm^2

Related Questions

Simplify. your answer should contain only positive exponents y^2x^3y^2
9p=81helppppppppppppppppp
Kalinda buys x packs of currant buns and y boxes of iced buns
The dimensions of a rectangle are dilated using a scale factor of 3. If the old area is 75 sq. Ft. What is the area of the new rectangle
Withdrawals by the owner for personal use do not affect net income or net loss of the business. a. True b. False

Which of the following segments is a diameter of O? A. UF
B. WM
C. WO
D. OF

Answers

Answer:

The answer to your question is letter A

Step-by-step explanation:

In the picture, we can observe that

UF is the diameter of the circle. Diameter is a line that reaches from one point on the edge of a circle, through its center, to a point on the opposite side.

WM is a secant or a chord

WO is the radius

OF is also a radius

Answer:

UF

Step-by-step explanation:

Which inequality models this situation? The distance to the lake is greater than 5.5 km.

A.
d > 6

B.
d < 5.5

C.
d > 5.5

D.
d < 6

Answers

the answer is C.
d>5.5

What is the value of the expression below when x = –2?5 + 3(x – 7) – (x + 1)

A.–23
B.–7
C.–21
D.-5

Answers

The value of the expression is -21.
5 + 3(x-7) - (x+1)

5 + 3(-2-7) - (-2+1)

5 + 3(-9) - (-1)

5 -27 + 1

-21


The answer is C.

The equation D=13/v shows that the density of a particular substance equals a mass of 13 grams divided by the volume of the substance. What happens to the density as the volume approaches 0?The density approaches infinity.
The density approaches 0.
The density approaches 1.
The density approaches 13.

Answers

D = 13/v

What happens to the density as the volume approaches 0?

The density approaches 13.

Assume : V = 3 ; V = 2 ; V = 1

D = 13/3 = 4.33
D = 13/2 = 6.50
D = 13/1 = 13

Answer:

Option A is correct

The density approaches infinity.

Step-by-step explanation:

Given the equation:

D = (13)/(v)               ....[1]

where,

D is density of a particular substance .

v is the volume of the substance.

We have to find What happens to the density as the volume approaches 0.

As the volume approaches to 0

⇒v \rightarrow 0

[1] ⇒

D \rightarrow \infty

⇒The density approaches infinity.

Therefore, the density as the volume approaches 0 is,  infinity.

Best describes the algebraic expression 15x+8

Answers

The following expression is 23
15x + 8 is an expression. This is because it has no "sides" like in a equation.

How many significant figures does the number 5280 FEET have? A) 2 B) 3 C) 4 D) 5

Answers

Answer:

The correct answer is B.
Other Questions
The numbers 1 through 50 are written with red marker on slips of paper while the numbers 51 through 100 are written with blue marker on slips of paper. All the papers are put into a bag and shuffled. One card is randomly selected. a. Find the probability of selecting a number less than 16 or a number written in red. b. Find the probability of selecting a number written in blue or a multiple of 5.
Abe is hiding 12 meters south of Nathan and Jessica is hiding due east of Abe if Nathan is 20 meters from Jessica , how far apart are Abe and Jessica .
Holly finds that (11m – 13n + 6mn) – (10m – 7n + 3mn) = m – 20n + 9mn. What error did Holly make? a)he only used the additive inverse of 10m when combining like terms. b)She added the polynomials instead of subtracting. c)She only used the additive inverses of –7n and 3mn when combining like terms. d) She did not combine all like terms.
Alice spins the spinner 3 times. What is the probability that she spins an A, then a B, and then a C?A. 1/3 B. 1/9 C. 1/27 D. 1/12