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Alika [10]
2 years ago
14

The diameter of a circle is 22 meters. What is the circle's area? Use 3.14 for ​

Mathematics
2 answers:
marshall27 [118]2 years ago
7 0

Solution:

<u>We know that:</u>

  • Diameter = 22 meters
  • Radius = Diameter/2
  • Area of circle = πr²

<u>Finding the radius:</u>

  • Radius = Diameter/2
  • => Radius = 22/2
  • => Radius = 11 meters

<u>Finding the area of the circle:</u>

  • Area of circle = πr²
  • => Area of circle = (3.14)(11²)
  • => Area of circle = 3.14 x 121
  • => Area of circle = 379.94 m²
Andrei [34K]2 years ago
4 0

Answer:

<u>379.94 m²</u>

Step-by-step explanation:

<u>Given :-</u>

Diameter = 22 m

<u>To Find :-</u>

Area

<u>Formula Required :-</u>

Area (circle) = πr²

<u>Solving :-</u>

Area = 3.14 x 11 x 11

= 3.14 x 121

= <u>379.94 m²</u>

<u>Solution :-</u>

<u>379.94 m²</u>

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Log

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Another submarine descent can be represented as y= -240 x where y is the elevation and x is time in hours. How long will it take
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8 0
3 years ago
Tammy has 35 coins nickels and quarters. In all she has $4.15. How many of each kind of coin does she have
sergey [27]

The currency called the U.S dollar can be split into smaller forms or currency value of itself. Examples of these smaller forms are: <u><em>dimes, nickels, pennies, and quarters.</em></u>

Tammy has 23 nickels and 12 quarters.

Let's represent the number of:

Nickels = n

Quarters = q

It is important to note that the value of:

<em>1 nickel = $0.05</em>

<em>1 quarter = $0.25</em>

<em />

Tammy has 35 coins nickels and quarters. This statement can be represented using an algebraic equation below:

n + q = 35

This can be rewritten as :

n = 35 - q

In all, she has $4.15. This statement can be represented using an algebraic equation below:

0.05n + 0.25q = 4.15

We substitute 35 - q for n in the above equation.

0.05(35 - q) + 0.25q = 4.15

1.75 - 0.05q + 0.25q = 4.15

Collect like terms

- 0.05q + 0.25q = 4.15 - 1.75

0.2q = 2.4

Divide both sides by 0.2

0.2q/0.2 = 2.4/0.2

q = 12

Therefore, the number of quarters Tammy has is 12.

Solving for the number of nickels, we have the equation:

n = 35 - q

n = 35 - 12

n = 23

Therefore, the number of nickels Tammy has is 23.

To learn more, visit the link below:

brainly.com/question/13312288

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