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1 year ago

14

When calculating the circumference of a circle, sometimes the radius is given instead of the diameter. What is the relationship

between radius and diameter? a. radius is twice the diameter c. diameter is twice the radius b. diameter is half the radius d. no relationship, can't find circumference with radius Please select the best answer from the choices provided A B C D

2 answers:

marin [14]1 year ago

8 0

Answer:

Option A ( radius is twice the daimeter )

Step-by-step explanation:

The relationship between radius and daimeter is given as

Radius² = Daimeter ⇒ r² = d

And cricumference can be calculated with radius

As circumference is 2πr

UkoKoshka [18]1 year ago

8 0

Answer: c. diameter is twice the radius

For example, if the radius is r = 10 feet then the diameter is twice that and it's d = 2*r = 2*10 = 20 feet.

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AleksAgata [21]

Angle NBW is 34 so do the math

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2 years ago

The first side of a triangle is 3 inches shorter than the second side, and 2 inches longer than the third side. How long is each

ziro4ka [17]

Answer:

the length of the first side of the triangle is $\frac{28}{3}\ in$

the length of the second side of the triangle is $\frac{37}{3}\ in$

the length of the third side of the triangle is $\frac{19}{3}\ in$

Step-by-step explanation:

Let

x-----> the length of the first side of a triangle

y----> the length of the second side of a triangle

z---> the length of the third side of a triangle

we know that

$x=y-3$

$y=x+3$ -----> equation A

$x=z+3$

$z=x-3$ -----> equation B

The perimeter of the triangle is equal to

$P=x+y+z$

$P=28\ in$

so

$28=x+y+z$ -----> equation C

substitute equation A and equation B in equation C

$28=x+(x+3)+(x-3)$

solve for x

$28=3x$

$x=\frac{28}{3}\ in$

Find the value of each side

the first side of a triangle is x

$x=\frac{28}{3}\ in$

the second side of a triangle is y

$y=\frac{28}{3}+3=\frac{37}{3}\ in$

the third side of a triangle is z

$z=\frac{28}{3}-3=\frac{19}{3}\ in$

7 0

2 years ago

A field is a rectangle with a perimeter of 1260 feet. The length is 100 feet more than width. Find the width and length of the r

lyudmila [28]

To solve this problem you must apply the proccedure shown below:

1. The formula for calculate the perimeter of a rectangle is:

$P=2L+2W$

Where $L$ is the length and $W$ is the width.

2. The length is $100ft$ more than the width, therefore:

$L=W+100$

3. Substitute values into the formula for calculate the perimeter and solve for the width:

$1260=2(W+100)+2W\\ W=265ft$

3. Then, the length is:

$L=265ft+100ft\\ L=365ft$

The answer is: The length is $365ft$ and the width is $265ft$

5 0

2 years ago

3. At a bargain store, Tanya bought 3 items that each cost the same amount. Tony bought 4 items that each cost the same amount,

Inessa [10]

(a) 3x=4(x-2.25) (or simplified: 3x=4x-9)

(b) 3x=4x-9
0=x-9
x=$9

(c) 3x9=27
4x9=36
36-9=27
and 27=27 therefore they spent the same and it is correct

(d) Tanya's items cost $9 each and Tony's items cost $2.25 less than this, or $6.75

3 0

2 years ago

S varies directly as t. if s is 20 when t is 4 then t is ____ when s is 30

Oliga [24]

Answer:

6

Step-by-step explanation:

We are doing unit rate.

Unit rate is when you get the value for 1 of the variables. In this, we would want to get the value for t. We do $\frac{20}{4}=5$ to find the t value. Now we do $\frac{30}{5}=6$ to find the value of the missing t. T=6.

Hope it Helps!

5 0

2 years ago

Read 2 more answers