All categories

3 years ago

Find the circumference of a circle whose. A. Diameter is 14cm B. Radius is 3.5cm

Mathematics

1 answer:

Nikitich [7]3 years ago

5 0

Hello!

Circumference of a Circle

C=πd

C=2πr

Plug in the values

C=14π

C≈44 cm

C=2π×3.5

C≈22 cm

Hope everything is clear.

Let me know if you have any questions!
#KeepLearning

;-)

You might be interested in

Use a proportion to find the missing side length in the following similar figures.

jasenka [17]

D because i did this alreadyyy

5 0

4 years ago

Nine times a number y plus seven is equal to a number y . Write the word sentence as an equation.

Dafna1 [17]

Answer: 9y + 7 = y

Explanation:

The phrase, "nine times a number y" is "9y" in the form of an equation. When any term is by a number, they are meant to be multiplied together. So, "9y" means "9 times y".

The phrase, "plus seven" simply means to add seven.

The phrase, "equal to number y" is "= y" because "number y" refers to that term.

And so, all together, you get 9y + 7 = y.

(Brainliest would be appreciated)

I hope this helped!

Good luck <3

4 0

2 years ago

Two lighthouses are located 60 miles from one another on a north-south line. If a boat is spotted S 21o E from the northern ligh

jasenka [17]

Answer:

(A)The northern lighthouse is 8.2 miles closer than the southern lighthouse.

Step-by-step explanation:

The triangle attached represents the given problem.

First, let us determine the distance of the Boat from each of the lighthouse.

In Triangle ABC,

∠A+∠B+∠C=180 degrees

21+∠B+16=180

∠B=180-37=143 degrees.

Using Law of Sines

$\frac{a}{Sin A}=\frac{b}{Sin B}\\\frac{a}{Sin 21^0}=\frac{60}{Sin 143^0} \\\text{Cross Multiply}\\a*sin143=60*sin21\\a=60*sin21\div sin143\\a=35.73 miles$

Similarly

$\frac{c}{Sin C}=\frac{b}{Sin B}\\\frac{c}{Sin 16^0}=\frac{60}{Sin 143^0} \\\text{Cross Multiply}\\c*sin143=60*sin16\\c=60*sin16\div sin143\\c=27.48 miles$

Difference in Distance =35.73-27.48=8.25 miles

Therefore, the northern lighthouse is 8.2 miles closer than the southern lighthouse.

8 0

4 years ago

2.2 • 10^6 - 4.3 • 10^5 = ?

umka21 [38]

Answer:

1.77 x 10^6

Step-by-step explanation:

2,200,000-430,000

1,770,000

7 0

4 years ago

Read 2 more answers

Jean Gray earns a graduated commission of 4% on her first $2000 of sales and 8% on all sales over $2000. Jeans sales for the pas

Ahat [919]

Jean Gray's total earnings over the past week was $3,925

Since Jean earns 4% for the first $2,00 business she does, she earns a base commission of = $2,000*0.04 = $80

Now, we need to find how of additional sales did Jean do over and above the base of $2,000. This is calculated as follows:

Total Sales = 3,925

Base sales =2,000

Add-on sales = 3,925-2,000 = 1,925

For the $1,925 sales, Jeans earns 8% commission, her commission for this will be 1,925*0.08 = $154

So, the total commission = $80 + $154 = $234

Her commission for the week was $234

8 0

3 years ago