All categories

2 years ago

The circumference of a circle is 71 π m. What is the area, in square meters? Express your answer in terms of π.

Mathematics

1 answer:

Svetach [21]2 years ago

8 0

The area of the circle is 1260.25 π m^2

You might be interested in

David bought 3 dvds and 4 books for $40 at a yard sale. Anna bought 1 dvd and 6 books for $18. How much did each dvd and book co

Ber [7]

Answer:

A book is worth $1 and a DVD is worth $12.

Step-by-step explanation:

The equations (2 unknowns and two equations, d is for a DVD and b is for a book):

For David: 3d+4b=40

For Anna: d+6b=18

Now multiply the second equation with -3 and add to the first equation:

3d+4b=40

−3d−18b=−54

Combined equation: −14b=−14 and b=1 (means that each book is worth $1).

Now for DVD price, use the second equation:

d=18−6 or d=12 (means that each DVD is worth $12).

A book is worth $1 and a DVD is worth $12.

8 0

3 years ago

Given the lengths of the sides, state if the triangle is acute, obtuse, or right. 8, 15, and 17 This is a(n) blank triangle.

Ivahew [28]

Answer:

This is a right triangle

Step-by-step explanation:

Pythagoras theorem is used to determine if a triangle is right, acute or obtuse

If the sum of squares of two shorter lengths is greater than the square of third side then the triangle is an acute triangle.

If the sum of squares of two shorter lengths is less than the square of third side then the triangle is an obtuse triangle.

If the sum of squares of two shorter lengths is equal the square of third side then the triangle is a right triangle.

so,

$(17)^2 = (15)^2+(8)^2\\289 = 225+64\\289=289$

Therefore, the given triangle is a right triangle ..

8 0

3 years ago

What is the approximate perimeter of the figure?

Digiron [165]

Answer:

7.1 inches

Step-by-step explanation:

perimeter you go round from apointof your choice so

add 2+2=4

then apply 1/4πd for the round part

d=4 and it's quarter a circle then add them together

7 0

2 years ago

Read 2 more answers

Which describes the relationship between 21 and 22?

ella [17]

Answer:

<1 and <2 and adjacent angles

3 0

2 years ago

Help on this question please

mina [271]

$\bf \textit{using the pythagorean theorem}\\\\
c^2=a^2+b^2\qquad 
\begin{cases}
c=hypotenuse\\
a=adjacent\\
b=opposite\\
-------\\
c=x\\
a=7\\
b=10
\end{cases}\implies x^2=7^2+10^2
\\\\\\
x=\sqrt{7^2+10^2}$

and surely you know how much that is.

8 0

2 years ago

The circumference of a circle is 71 π m. What is the area, in square meters? Express your answer in terms of π.​

The circumference of a circle is 71 π m. What is the area, in square meters? Express your answer in terms of π.