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MrRa [10]
3 years ago
9

The radius of a circle 6 cm what is the circles area?

Mathematics
1 answer:
dolphi86 [110]3 years ago
7 0

Answer:

113.04 cm

Step-by-step explanation:

We know the formula to find the area of a circle is

A= pi(r^{2})

And we are told to use 3.14 instead of pi so what we have now is,

A=3.14(r^{2})

We are also told the radius, r, is 6. So our equation now looks like this,

A=3.14(6^{2})\\\\6^{2}is the same as 36, because 6x6 is 36.

Now we have,

A=3.14(36)  

Which equals 113.04 and that is the area!

Hope that helps and have a great day!

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Which transformation will always map a parallelogram onto itself?
Vilka [71]

Answer: a 180° rotation about its center


Step-by-step explanation:

<em>A parallelogram has rotational symmetry of order 2.</em>

Thus, rotation transformation maps a parallelogram onto itself 2 times during a rotation of 360^{\circ} about its center.

And that is at 180^{\circ} and 360^{\circ} about its center.

Therefore, a 180° rotation about its center will always map a parallelogram onto itself .

  1. A figure has<em> rotational symmetry </em>when it can be rotated and it still appears exactly the same.
  2. The<em> order of rotational symmetry</em> of a shape is the number of times it can be rotated around 360^{\circ} and still appear the same.

5 0
3 years ago
Read 2 more answers
5) Ziegler is using paper for an art project
lord [1]

Answer:

9.5 * 10^-2 mm

Step-by-step explanation:

To find the total thickness, we proceed to add the two thickness that we have

Mathematically, this will be;

0.025 mm + 7 * 10^-2 mm

7 * 10^-2 mm = 0.07

So we have;

0.025 mm + 0.07 mm = 0.095

In scientific notation, this is 9.5 * 10^-2 mm

6 0
3 years ago
Is i have 5 red marbles, 2 green and 3 blue, what is the probability of drawing two blue marbles in a row?
kherson [118]
So the chance of getting 1 blue marble is 30% or 3/10, the chance of getting another in a row is also 3/10 since its asking for both youd do 3/10*3/10 = 9/100
4 0
3 years ago
PLEASE HELP!!! 25 POINTS!!!
Phoenix [80]
6 4
5

2 3
6

7 5
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2 4
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3 5
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3 0
2 years ago
128 POINTS IF YOU HELP
Aleksandr-060686 [28]
(A) We let y = the cost and are told x = the number of people. Since you pay $20 per person, the cost is 20x. That is, y=20x

(B) Again, let the cost =y and the number of people is given as x. You pay $10 per person or 10x plus an additional $50 for the room. That is, y=10x+50

(c) Link to graphs: https://www.desmos.com/calculator but if that doesn't work see the attachment for a screen shot. You just have to put the equations (type them) at left and the graph comes automatically.

(D) The admission price is the same when the two equations are equal. You can find this by setting them equal to each other as such: 20x = 10x+50 and solving for x. However, since you just graphed them the point of intersection (where the lines share/have the same point) gives the information. Remembers that (x,y) = (people, cost). The graphs intersect at (5, 100) so for 5 people the cost is the same and the cost is $100.

(E) For the regular rate we let x = 6 and solve for y (the cost). We get y = 20x which is y = (20)(6)=120. It costs $120 using the regular rate to take 6 people. Now let's use the equation for the group rate again with x = 6. Here we get y = 10x +50 or y = 10(6)+50 = $110. The group rate costs $110.

(F) The cost is the same at 5 people but if there are more than five the group rate is better as we saw in part E. So the regular rate is better for less than 5 people.

(G) Here y = $150. Let us use the group rate formula and solve for x (the number of people). 10x+50 = 150 so 10x = 100 and x = 10. Since 10 is more than 5 this is the better deal. However if you don't believe it or want to double check we can solve for x using y = 150 and the regular rate equation. We get: 20x = 150 so x = 7.5 Since we can't bring half a person we would only be able to bring 7 and that is less than 10 so this is not the best choice. Use the group rate and bring 10 people!

8 0
3 years ago
Read 2 more answers
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