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Nikolay [14]
3 years ago
5

Use π = 3 19. Calculate the area of a circle with diameter of 14cm

Mathematics
2 answers:
antiseptic1488 [7]3 years ago
7 0
The equation for Area of circle:

A = πr²

Using pi as 3.14
r = radius, d = diameter

r = d/2
r = 14/2
r = 7

A = (3.14)7²
A = 49(3.14)
A = 153.86 cm²

Using pi as 3.19
A = πr²
A = (3.19)7²
A = 49(3.19)
A = 156.31cm²


hope this helps

Ilia_Sergeevich [38]3 years ago
6 0
Area of a circle = PI x r^2

you state pi = 3.19  ( it is usually 3.14, if it is a typo see below )

diameter = 14cm
 r = 1/2 the diameter, so r = 7 cm

area = 3.19 x 7^2

area = 3.19 x 49 = 156.31 square cm

( if PI = 3.14, area = 3.14 * 49 = 153.86 square cm)
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the elephants at the norfolk zoo are fed 1/2 a barrel of corn each day. the buffalo are fed 7/10 as much corn as the elephants.
maksim [4K]

7/20 barrels of corn are the buffalo fed each day.

How to solve word problems?

It's actually fairly easy to solve word problems using a tried-and-true step-by-step approach.

  • Aloud to yourself, read the issue.
  • Make a Drawing.
  • Ask yourself, "What am I looking for?"
  • List the items that have been provided.
  • Locate the key phrases.
  • Solve.
  • Verify your work.

Here are some actions to take:

  1. Recognize the issue, including all the terminology used to describe it. Recognize what you need to look for, Recognize the issue's context.
  2. Convert the issue into an equation. Give the unknown a variable (or variables) to symbolize, Indicate exactly what the variable stands for.
  3. Put the strategy into action and find a solution.

Given:

Elephants at the Norfolk zoo are fed = 1/2

Buffalo are fed 7/10 as much corn as the elephants = 7/10 * Elephants fed

= 7/10 * 1/2

= 7/20

Hence, 7/20 barrels of corn are the buffalo fed each day.

To know more about word problems check the below link:

brainly.com/question/13818690

#SPJ4

4 0
1 year ago
Someone help me please
Orlov [11]

Answer:

A 500.00 look there's a pattern

5 0
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At one factory the ratio of defective light bulbs produced to total light bulbs produced is about 4:500.How many light bulbs are
Dennis_Churaev [7]

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3 years ago
Your new job is 25 miles away from your house. If you drive to work at a rate of 50 miles per hour, how long does it take you to
sergeinik [125]

the time taken to get to your work place is 0.5 hour.

The given parameters;

  • distance between  your new job and your house  = 25 miles
  • speed to work, v = 50 mph

The time taken to get to work is obtained by dividing  the distance between your new job and your house, by speed of your motion to work.

Distance = speed x time

Time = \frac{Distance }{speed} \\\\T ime = \frac{25}{50} \\\\Time = 0.5 \ hour

Thus, the time taken to get to your work place is 0.5 hour.

Learn more here: brainly.com/question/17962414

8 0
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