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Ostrovityanka [42]
3 years ago
6

PLZ HELP!!!!!!!!!!!!!!!!

Mathematics
2 answers:
padilas [110]3 years ago
6 0

Answer:77.04

Step-by-step explanation:

A.77.04

B.95.04

C.113.04

D.149.04

elena-14-01-66 [18.8K]3 years ago
3 0

Answer:

A=77.04\ in^2

Step-by-step explanation:

we know that

The area of the shaded sections is equal to the area of the circle minus the area of the triangle

so

A=\pi r^{2} -\frac{1}{2}(b)(h)

where

r=12/2=6\ in ----> the radius is half the diameter

b=12\ in\\h=6\ in

substitute

A=(3.14)6^{2} -\frac{1}{2}(12)(6)

A=77.04\ in^2

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8 0
3 years ago
Aight I think I just figured out this pyramidal sequence thing. You're going up by perfect numbers right, like 4, 9, 16, 25. Bec
muminat

Answer:  Close.  Your observation is correct. When you see that the difference between two numbers in the sequence is a perfect square, you are looking at a pyramidal sequence

1² = <u>1 </u> top of pyramid

1 + 2² = <u>5</u>   total in top 2 layers

1 + 2² + 3² = <u>14</u> total in top 3 layers

1 + 2² + 3² + 4² = <u>30</u> total in the top 4 layers.

1 + 2² + 3² + 4² + 5² = <u>55</u>  total in the top 5 layers.

Layer 6 is 6² more, 91

Layer 7 is 7² more so, 140

I think you got it.

Step-by-step explanation:  The numbers are like when you keep adding the layers in a pyramid, and the next number is the total of the previous layers plus the square of the next layer number.

4 0
3 years ago
The three angles of a triangle are in the ratio 5:4:1. Find all the angles of the triangle.
solniwko [45]

Answer:

Step-by-step explanation:

let the first angle be 5x

second be 4x

and third be 1x

as we know that by adding all the sides of triangle we get 180°

therefore  ,

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hence ,  

x=18°

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second angle - 18*4=72°

third angle - 18°

HOPE THIS HELPS YOU !!!

6 0
3 years ago
Read 2 more answers
Please help. In much need
Andreyy89

Answer:I have no clue what that is..

Step-by-step explanation:

4 0
3 years ago
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