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valentinak56 [21]
2 years ago
15

Find the area of circle o if DCBO is a rectangle and DB measure 10 units

Mathematics
2 answers:
GREYUIT [131]2 years ago
5 0

Answer:

  314.2 square units

Step-by-step explanation:

The diagonals of a rectangle are the same length, so segment OC is the same length as segment DB: 10 units. OC is a radius of the circle, which means the circle's radius is 10 units.

The area of a circle is given by ...

  A = πr²

  A = π(10 units)² = 100π units²

  A ≈ 314.2 units²

The area of circle O is about 314.2 square units.

Dmitrij [34]2 years ago
3 0

Answer:

100\pi

Step-by-step explanation:

Step 1: Identity the radius.

Since O is the center of the circle, and C and E lie on the circumference, OC and OE are the radii of the circle and thus,

OC=OE.

Step 2: Consider the rectangle.

All diagonals in a rectangle are congruent so this means

DB= OC ( OC is also a diagonal).

Thus, OC= 10 units.

Step 3: Analyze

So this means OE is also 10 units as well.

Since we know the length of the radius, Use the area of circle,

\pi {r}^{2}

\pi( {10}^{2} ) = 100\pi

So the area of a circle is 100 pi.

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Answer:

Step-by-step explanation:

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8 0
3 years ago
Diane has $1.85 in dimes and nickels. She has a total of 24 coins. How many of each kind does she have?
poizon [28]
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3 0
3 years ago
The sum of the angle measures of a polygon with n sides is 1260. find n.
Murrr4er [49]
Knowing the interior angle sum formula is; 

180x(n-2)

180x(n-2)=1260 (solve for n here) 
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Therefore, this polygon has 9 sides.

Hope I helped :) 
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3 years ago
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kozerog [31]
Assume that the length of the rectangle is "l" and that the width is "w".

We are given that: 
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l = 2w + 1 .......> equation I
(2) The perimeter is 92 cm. This means that:
92 = 2(l+w) ...........> equation II

Substitute with equation I in equation II to get the width as follows:
92 = 2(l+w)
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46 = 3w + 1
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w = 45/3
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3 0
3 years ago
The
olya-2409 [2.1K]

Answer:

home team

.............................................................................................

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