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2 years ago

Find the exact value of the area of a circle whose radius is 3.1

Mathematics

2 answers:

Kazeer [188]2 years ago

7 0

Answer:

Area = pi r²

Area = 22/7 × 3.1 × 3.1 = 30.202 unit²

GuDViN [60]2 years ago

4 0

Step-by-step explanation:

$area \: of \: circle = \pi \: {r}^{2} \\ = 3.14 \times {(3.1)}^{2} \\ = 3.14 \times 9.61 \\ = 30.1754 \: {unit}^{2} \\$

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The Cramer's Rule states that, in a system of equation in two unknowns, in which determinants D is not 0, X=_____and Y=_____.

yan [13]

Answer:

Step-by-step explanation:

$x=\frac{D_{1}}{D} \\y=\frac{D_{2}}{D}$

5 0

3 years ago

Two squares are similar. The

Pepsi [2]

Answer:

The perimeter of the second square is 36 inches

Step-by-step explanation:

Given

Represent the sides of the squares with S1 and S2.

So:

$S_1:S_2 = 1 : 3$ --- Scale factor

$P_1 =12$ --- perimeter of the first

Required

Calculate P2, the perimeter of the second

Represent the ratios of the perimeter:

$Scale = P_1 : P_2$

Substitute 12 for P1

$Scale = 12 : P_2$

Equate both scale factors

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$\frac{12}{P_2} = \frac{1}{3}$

Cross multiply

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6 0

3 years ago

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DaniilM [7]

Answer:

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Step-by-step explanation:

5 0

3 years ago

$#4 find the value of x. Round answer to nearest tenth please

Sonja [21]

Answer:

12.9

Step-by-step explanation:

sin 59 = opposite/hypotenuse

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3 years ago

Pranked haha hkjkdvhpihigiuaspihgpiaisuhgiuasi free redit

iren2701 [21]

Okay the answer is 69 because 81-2 is 69

6 0

3 years ago

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