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Ad libitum [116K]
3 years ago
10

A circle has an area of 225pift2 find the radius of the circle and find the diameter and circumference of the circle

Mathematics
1 answer:
RideAnS [48]3 years ago
6 0

Answer:

  • radius: 15 ft
  • diameter: 30 ft
  • circumference: 30π ft

Step-by-step explanation:

The area is given in terms of the radius as ...

  A = πr^2

so we can find the radius as ...

  r = √(A/π)

For your circle, the radius is ...

  r = √(225π ft^2/π) = 15 ft

The diameter is twice the radius, so is ...

  d = 2r = 2·15 ft = 30 ft

And the circumference is π times the diameter:

  C = πd = π·30 ft = 30π ft

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Should be 6^3.

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2 years ago
James is six years older than lousie. Eight years from now, James will be 4 times older than loise was 4 years ago. What is the
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Answer: 26 years.

Step-by-step explanation:

Let x = current age of Louise  (in years).

Then current  age of James =  x+6

Eight years from now, James's age = x+6+8= x+14

4 years ago, Louise's age = x-4

According to the question

x+14 = 4(x-4)

⇒ x+14 = 4x-16

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8 0
3 years ago
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The slide needs to be 4.123 meters

Step-by-step explanation:

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Distance of the bottom of the slide from the ladder- 4 mtr

Length of the slide needed

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For right-angled triangle we know from Pythagoras theorem-

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