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2 years ago

Can anyone find the circumference in terms of pi?

Mathematics

2 answers:

gladu [14]2 years ago

7 0

Answer:

The circumference of circle is 20π cm.

Step-by-step explanation:

Given that the formula of Circumference is C = 2×π×r where r represents radius. So you have to substitute the following values into the formula :

$c = 2 \times \pi \times r$

$let \: r = 10$

$c = 2 \times \pi \times 10$

$c = 20\pi \: cm$

qaws [65]2 years ago

5 0

Answer:

20 $\pi$

Step-by-step explanation:

The formula for circumference is 2 $\pi$ r, where r stands for radius. Therefore, the circumference of this circle can be defined by:

2 $\pi$ r

2 $\pi$ 10

20 $\pi$

Hope this helps :) Please contact me if you have any questions!

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qwelly [4]

Answer:

the 19.50 for each one

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

Brianna has x nickels and y pennies. She has no less than 20 coins worth no more

Bond [772]

Answer:

$y \ge 20 - x$

$y \le 80 -5x$

$(x,y) = (15,5)$

Step-by-step explanation:

Given

$Nickels = x$

$Pennies = y$

$Amount = \$0.80$ maximum

$Coins = 20$ minimum

Required

Solve graphically

First, we need to determine the inequalities of the system.

For number of coins, we have:

$x\ +\ y\ge 20$ because the number of coins is not less than 20

For the worth of coins, we have:

$0.05x\ +\ 0.01y\ \le0.80$ because the worth of coins is not more than 0.80

So, we have the following equations:

$x\ +\ y\ge 20$

$0.05x\ +\ 0.01y\ \le0.80$

Make y the subject in both cases:

$y \ge 20 - x$

$0.01y \le 0.80 - 0.05x$

Divide through by 0.01

$\frac{0.01y}{0.01} \le \frac{0.80}{0.01} -\frac{ 0.05x}{0.01}$

$y \le \frac{0.80}{0.01} -\frac{ 0.05x}{0.01}$

$y \le 80 -5x$

The resulting inequalities are:

$y \ge 20 - x$

$y \le 80 -5x$

The two inequalities are plotted on the graph as shown in the attachment.

$y \ge 20 - x$ --- Blue

$y \ge 80 -5x$ --- Green

Point A on the attachment are possible solutions

At A:

$(x,y) = (15,5)$

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ArbitrLikvidat [17]

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Bess [88]

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3 years ago

Joan took her three children to the zoo. Admission is $7 each. The snack bar sells water for $2 per bottle and chips for $3 per

lys-0071 [83]

The expression for the total cost of their trip is 7 + 2x + 3y.

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6 months ago