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swat32
3 years ago
5

The diameter of a circle is 4 feet what is the area?

Mathematics
1 answer:
masya89 [10]3 years ago
3 0

the area of the circle is 12.57

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Hello I need help here.
guajiro [1.7K]

The area of a circle with chord length of 3√2cm is 28. 3 cm²

<h3>How to determine the area</h3>

The formula chord length of  a circle is expressed as;

Chord Length = 2 × r × sin(c/2)

Where;

  • r is the radius
  • c is the angle formed by the chord and the circumference of the circle
  • Chord length = 3√2

Let's substitute into the formula

3√2 = 2r sin 90/ 2

3√2 = 2r sin 45

3√2 = 2r × 1/ √2

2r = 3√2 ×√2/ 1

2r = 6

Make 'r' the subject

r = 6/2

r = 3cm

The formula for area of a circle is expressed as;

Area = πr²

Area = 3.142 × (3)²

Area = 3. 142 × 9

Area = 28. 3 cm²

Thus, the area of a circle with chord length of 3√2cm is 28. 3 cm²

Learn more about area here:

brainly.com/question/22972014

#SPJ1

5 0
1 year ago
How would you solve the equation 5x - 1 = 149?
PIT_PIT [208]

Answer:

30

Step-by-step explanation:

5x-1=149

5x=149+1=150

5x=150

x=150/5

x=30

3 0
3 years ago
Read 2 more answers
Grace bought a season pass to galactic quest amusement park last summer. With the pass, she got 4 visits to the park at a discou
defon
Answer: 59$

Step-by-Step Explanation:

Let the discounted rate be ‘x’
No. of visits = 4
Total Amount for the visits = 4 * x = 4x
Additional cost = 25$
Total Amount = 261$

Therefore,
= 4x + 25 = 261
= 4x = 261 - 25 = 236
=> x = 236/4 = 59

Therefore, x = 59
Hence, discounted rate = 59$
3 0
2 years ago
For numbers 1a-1d, tell wheaten the fractions are equivalent by selecting the correct symbol
Deffense [45]
What fractions? I see nothing...Do you have the choices?
5 0
4 years ago
A box of cereal states that there are 96 calories in a 3/4
IgorC [24]

Answer:

112 calories per cup

Step-by-step explanation:

Let x = unit rate for calories per cup,

Then (3/4)*x = 84

and x = 84*(4/3) = 112 calories per cup

3 0
3 years ago
Read 2 more answers
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