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mel-nik [20]
3 years ago
12

If N = 34, what is 7 - N?

Mathematics
1 answer:
Gre4nikov [31]3 years ago
4 0
7 - N       (replace N with 34)

7 - 34

- 27


The answer is - 27
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<u>Step-by-step explanation:</u>

Separate the shaded region into two parts:

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1.\ Area(A)=\pi\ r^2\ \bigg(\dfrac{\theta}{360}\bigg)\\\\\\.\qquad \qquad =\pi(11.1)^2\bigg(\dfrac{230}{360}\bigg)\\\\\\.\qquad \qquad =247.3

2.\ \text{Use Law of cosines to find the length of the third side.}\\\text{ Then use Heron's formula to find the Area of the triangle.}\\\\s=\dfrac{11.1+11.1+20.12}{2}=21.16\\\\\\A=\sqrt{s(s-a)(s-b)(s-c)}\\\\.\ =\sqrt{21.16(21.16-11.1)(21.16-11.1)(21.16-20.12)}\\\\.\ =\sqrt{2227}\\\\.\ =47.1

Area of shaded region = Area of (1) + Area of (2)

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                                      =               294.4

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