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3 years ago

A circle with radius of 6cm sits inside a circle with radius of 9 cm

Mathematics

1 answer:

san4es73 [151]3 years ago

5 0

Answer: area of shaded region is 141.3 cm²

Step-by-step explanation:

We would assume that the shade region is the area between both circles. The area of the shaded region is the area of the outer circle - the area of the inner circle.

The formula for determining the area of a circle is expressed as

Area = πr²

Where

r represents the radius of the circle.

π is a constant whose value is 3.14

Considering the inner circle,

Radius = 6 cm

Area = 3.14 × 6² = 113.04 cm²

Considering the outer circle,

Radius = 9 cm

Area = 3.14 × 9² = 254.34 cm²

Area of the shaded region is

254.34 - 113.04 = 141.3 cm²

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Find the distance between a and b. a = 9.21, b = –5.51

cricket20 [7]

9.21 - (-5.51)
9.21 + 5.51 = 14.72
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5 0

3 years ago

Read 2 more answers

In a right triangle one leg measures a quarter of the other, how much do its acute angles measure? with procedure please

KATRIN_1 [288]

Answer:

The answer to your question is 14° and 76°

Step-by-step explanation:

Data

leg 1 = x

leg 2 = x/4

angle 1 = ?

angle 2 = ?

Process

To solve problem use trigonometric functions. We must use the trigonometric function that relates both legs (tangent).

tangent Ф = Opposite side / Adjacent side

-Substitution

tan Ф = (x/4) / x

-Simplification

tan Ф = x / 4x

tan Ф = 1/4

- Find Ф

Ф = tan⁻¹(1/4) = 14°

- Find the other acute angle

The sum of the internal angles in a triangles equals 180°

Ф + Ф₁ + 90° = 180

-Solve for Ф₁

Ф₁ = 180 - 90 - 14

-Result

Ф₁ = 76°

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2 years ago

katrin2010 [14]

Answer:

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Step-by-step explanation:

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2 years ago

Rudy has 10 white she sells 23 pink seashells and 21 Brown see cells if he divides the cells into equally between three friends

Alex_Xolod [135]

Answer:

Each friend will get 18 sea shells.

Step-by-step explanation:

Given:

Rudy has white sea shells = 10

Rudy has pink sea shells = 23

Rudy has brown sea shells = 21

Number of friends = 3

Rudy divides the sea shells into equally between three friends.

We need to find how many sea shells each friend can get.

Now first we find the total number sea shells.

Total number of sea shells = white sea shells + pink sea shells + brown sea shells = 10 + 23 + 21 = 54

Now to find number of sea shell each friend can get we will divide total number of sea shell with number of friends.

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Hence each friend will get 18 sea shells.

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2 years ago

Can you put this into one sentence The Soviet team dominated the second period. The Americans scored twice in the last period. T

Greeley [361]

the americans scored twice in the last period although the soviet team dominated second period, after that the americans finally took the lead

(this is english not math change your question when you have to do this again)

4 0

3 years ago