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Elenna [48]
3 years ago
13

Find the area of a circle with a diameter of four

Mathematics
2 answers:
Elis [28]3 years ago
7 0

Answer:

12.57

Step-by-step explanation:

the formula for the area of a circle is \pi r^{2}

the diameter is 2 times the radius, so dividing it by 2 gives you a radius of 2

substitute the 2 for the r in the formula and solve

\pi 2^{2}

4\pi

≈12.57

Furkat [3]3 years ago
5 0

Answer:

A = 12.56637

Step-by-step explanation:

A = \pi  * r^2\\\pi = 3.14159

r = diameter / 2\\4 / 2 = 2

A = 3.14159 * (2^2)

= 12.56637

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Can someone help me with this question
stira [4]

Answer:

D

Step-by-step explanation:

this answer is correct , i think if you think of it in logically

3 0
2 years ago
a small bridge sit atop for cube shaped powers that all have the same volume. The combined volume of the four pillars is 503 how
Natasha_Volkova [10]

Answer:

60 inches long are the sides of the pillars.

Step-by-step explanation:

Given : A small bridge sits atop four cube shaped pillars that all have the same volume. the combined volume of the four pillars is 500 ft cubed.

To find : How many inches long are the sides of the pillars?

Solution :

Refer the attached picture below for Clarence of question.

The volume of the cube is V=a^3

Where, a is the side.

The combined volume of the four pillars is 500 ft cubed.

The volume of each cube is given by,

V=\frac{500}{4}=125\ ft^3

Substitute in the formula to get the side,

125=a^3

a=\sqrt[3]{125}

a=5\ ft

We know, 1 feet = 12 inches

So, 5 feet =5\times 12=60 inches

Therefore, 60 inches long are the sides of the pillars.

6 0
3 years ago
What is the answer to 5x-2=8
sergejj [24]
I hope this helps you



5x=8+2


5x=10


5x÷5=10÷5


x=2
4 0
3 years ago
Read 2 more answers
What is the value of x
jok3333 [9.3K]

Answer:

60

Step-by-step explanation:

x = (1/2)(172 - 52)

x = (1/2)(120)

x = 60

8 0
3 years ago
The measures of the angles of a triangle are shown in the figure below. Solve for x.
ryzh [129]
(3x + 13) + (8x + 14) + 109 = 180°

(3x + 13) + (8x + 14) = 71°

11x + 27 = 71°

11x = 44°

x = 4
5 0
3 years ago
Read 2 more answers
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