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kondaur [170]
3 years ago
13

Hello I need help on this math question​

Mathematics
2 answers:
bagirrra123 [75]3 years ago
7 0

Answer:

153.9

Step-by-step explanation:

Diametre = 14, Radius = diametre/2 = 14/2 = 7

Area of circle = π*r^2,   π=3.14

= 3.14*7^2

=3.14*49

=153.9

Thepotemich [5.8K]3 years ago
3 0
I think it is either a b or c
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Step-by-step explanation:

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3 years ago
The measure of each exterior angle of a regular 30-gon is
dezoksy [38]

Answer:

12°

Step-by-step explanation:

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<u>The measure of each exterior angle is the total divided by the number of angles, or 360/30 = 12º.</u>

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3 years ago
In how many different ways can 6 runners be assigned to 6 lanes at the start of a race?
Vedmedyk [2.9K]
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5 0
4 years ago
The edge of a cube was found to be 30 cm with a possible error in measurement of 0.2 cm. Use differentials to estimate the maxim
rjkz [21]

Answer:

Maximum volume error = ±540 cm³

Relative error = 0.02

Percentage error = 2%

Step-by-step explanation:

Relative error : The ratio of volume error to the total volume.

Percentage error: The product of relative error and 100.

The volume of a cube is = side^3

v =x³

Differentiate with respect to x

\frac{dv}{dx} = 3x^2

\Rightarrow dv = 3x^2 dx

Here are x = 30 cm and dx= ±0.2 cm

∴ dv = 3×(30 cm)² (±0.2 cm)

      =±540 cm³

The volume of the cube = 30³ cm ³ = 27,000 cm³

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=\frac{dv}{v}

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= 0.02.

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= (0.02×100)

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7 0
3 years ago
Find the perimeter of the shape right triangle do not forget to label your answer with units 19cm15cm5cm
alina1380 [7]

Answer:

39cm

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3 years ago
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