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NikAS [45]
2 years ago
14

A class room of 10m long and 5 m wide has two windows of size 15 mx 1 m and a door of 1.5 m ×2 m. The cost of making the 4 walls

at Rs. 750/m² is 49,500. Find the height of the classroom…​
Mathematics
1 answer:
Salsk061 [2.6K]2 years ago
8 0

Answer:

A class room of 10m long and 5 m wide has two windows of size 15 mx 1 m and a door of 1.5 m ×2 m. The cost of making the 4 walls at Rs. 750/m² is 49,500. Find the height of the classroom…

Step-by-step explanation:

A class room of 10m long and 5 m wide has two windows of size 15 mx 1 m and a door of 1.5 m ×2 m. The cost of making the 4 walls at Rs. 750/m² is 49,500. Find the height of the classroom…

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Graph a triangle (LMN) and rotate it 180° around the origin to create triangle L′M′N′.
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When a triangle is rotated, it must be rotated through a center of rotation.

Assume the coordinate of LMN is

\mathbf{L = (1,1)}

\mathbf{M = (1,7)}

\mathbf{N = (3,6)}

The rule of 180-degree rotation is:

\mathbf{(x,y) \to (-x,-y)}

So, we have:

\mathbf{L' = (-1,-1)}

\mathbf{M' = (-1,-7)}

\mathbf{N' = (-3,-6)}

See attachment for the graphs of LMN and L'M'N

<u>(a) Describe the transformation</u>

When triangle LMN is rotated 180 degrees across the origin, the x and y coordinates of LMN are negated to form triangle L'M'N'

<u>(b) Lines LL' and MM'</u>

The distance between point L and the center of origin is the same as the distance between point M' and the center of origin

Similarly, the distance between point L and the center of origin is the same as the distance between point M' and the center of origin

<u>(c) Line NN'</u>

Line NN' will assume the same characteristics as lines LL' and MM'

Read more about transformations at:

brainly.com/question/11707700

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