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STatiana [176]
3 years ago
13

The diameter of a circle is 40 m. Find the area of the circle in terms of pi

Mathematics
1 answer:
VashaNatasha [74]3 years ago
3 0

Answer: 400π

Step-by-step explanation:

The formula for the area of a circle is πr²

First you have to calculate the radius by halving the diameter so radius is 20m.

Then you put in your calculator πx20²

This equals 400π (in terms of pi).

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I still need with this one please
mars1129 [50]

Pythagorean Theory, a^2 + b^2 = c^2

24^2 + 7^2 = x^2

527 = x^2

x = 22.96

3 0
3 years ago
What is the solution to the system of equations graphed below y=1/2x+2 y=-2x+-3
vladimir1956 [14]

Answer:

<h2>x = -2, y = 1</h2>

Step-by-step explanation:

given the system of equations y=1/2x+2 and y=-2x+-3, since the 2 equations are functions of y, we will equate both equations together and calculate the value of x as shown

1/2x+2 = -2x-3

x/2+2x = -3-2

5x/2 = -5

5x = -10

x = -10/5

x = -2

Substituting x = -2 into any of the equation to get the value of y we have;

y = -2(-2)-3

y = 4-3

y = 1

The solution to the system of equation (x, y) = (-2, 1)

4 0
4 years ago
Find the quotient<br> 4/3÷1 1/12
nlexa [21]
The answer should be 1/9

8 0
3 years ago
Find x if a] 5^x=625 root 5 b] 3^2x-1 = 243
katen-ka-za [31]

x=3, you can find this by using finding common bases for equation b because 243=3^5. Because of that you can get rid of three on both sides to get the equation 2x-1=5 and then just solve for x to get x=3. For the first equation 5^3=625 so that also proves x=3.

Sorry if my explanation is a little disorganized if you need more help feel free to ask

6 0
3 years ago
What is the area of the trapezoid? Leave the answer in simplest radical form. The figure is not drawn to scale.
inn [45]

Answer:

  • 72 ft²

Step-by-step explanation:

The bottom side length of the triangle is the difference between the top base length and the bottom base length:

  13 ft - 5 ft = 8 ft

The vertical side length of the triangle is the same, because the triangle is an isosceles right triangle.

Since we know the base lengths and height of the trapezoid, we can use the usual formula for the area:

  A = (1/2)(b1 +b2)h

  = (1/2)(5 ft + 13 ft)(8 ft) = 72 ft²

6 0
3 years ago
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