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nignag [31]
3 years ago
6

Calculate the circumference and area of this circle. 4cm radius​

Mathematics
2 answers:
BigorU [14]3 years ago
7 0

Answer: Using the formula,

Area=π×r2.

Area=π×r2.

=π×(4 cm)2.

=16π cm2≈50.24 cm2.

Step-by-step explanation:

Alja [10]3 years ago
5 0

Answer:

the circumference is 25.133 and the area is 50.265

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A bowl contains 25 balls numbered 1 to 25. A ball is drawn and its number is noted. Without replacing the first ball, another ba
bazaltina [42]

13  balls are odd in 25

1st pick = 13/25 probability of picking an odd

2nd pick = 12/24 = 1/2 probability

13/25 x 1/2 = 13/50 probability

Answer would be 13/50


6 0
3 years ago
Read 2 more answers
Two points are 10 units apart on the coordinate plane. If
galina1969 [7]

Answer:

The vertical distance the ant have to walk is 8 units

Step-by-step explanation:

∵ The ant must be walk vertically and horizontally

∴ The distance from start point to end point will be as

   a hypotenuse of a right angle triangle

∵ The ant would have to walk 6 units horizontally that

   means one side of the right angle is 6 units

∵ The two points are apart by 10 units that means

   the length of the hypotenuse is 10 units

∴ The vertical distance the ant would have to walk is

   the length of the second side of the right angle

* By using Pythagoras Theorem:

∵ (hypotenuse)² = (horizontal leg)² + (vertical leg)²

∴ 10² = 6² + (vertical leg)²

∵ (vertical leg)² = 100 - 36 = 64

∴ Vertical leg  = √64 = 8 units

∴ The vertical distance the ant have to walk is 8 units

5 0
4 years ago
Dan invests £1600 into his bank account. He receives 3.5% per year simple
kirill115 [55]

Answer:

<em>171200 pennies</em>

Step-by-step explanation:

Amount after 2 years = Principal + Interest

Given

Principal = £1600

Rate = 3.5%

Time = 2years

Get the interest

Interest = PRT/100

Interest = 1600*3.5*2/100

Interest = 32 * 3.5

Interest = £112

Get the amount after 2 years;

Recall that:

Amount after 2 years = Principal + Interest

Amount after 2 years = 1600 + 112

Amount after 2 years  = £1712

<em>Hence the amount Dan will have after 2 years is £1712</em>

<em>1712 pounds = (1712 * 100)penny</em>

<em>1712 pounds = 171200 pennies</em>

6 0
3 years ago
What is the perimeter of triangle ABC? Round each step to the nearest tenth. Please help me
Ad libitum [116K]

I would use the pythagorean theorem to find the lengths of each side. a² + b² = c².

Side AB is one we're looking for. If you make other right triangle with that same side you can see that one length is 4 and the other is 3. So, 4² + 3² = c² → 25 = c² → 5 = c. Side AB is length 5.

Side AC is another. Do the same with that side and you get that one length is 4 and the other is 3. (This is the same one as above) so side AC is length 5.

Side BC is the last one. One of the lengths is 1 and the other is 1 → 1² + 1² = c² → 2 = c² → 1.414213562 = c so side BC is approximately length 1.41.

Add each length up and you get a perimeter of roughly 11.4

8 0
4 years ago
What is -100x and what is x
Zielflug [23.3K]

Answer:

-100x=-100

x=1

Step-by-step explanation:

(simplifying the equation)

-100x-100=0

-100x=-100 they subtracted -100 from both sides

x=1  then divided by -100

:) ur welcome

4 0
3 years ago
Read 2 more answers
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