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Paha777 [63]
4 years ago
6

∆ABC is translated 6 units up and 3 units left to create ∆A'B'

Mathematics
1 answer:
guajiro [1.7K]4 years ago
6 0

Keep in mind that the positive directions of the two axis are: upwards for the y axis and rightwards for the x axis.


So, translating a point 6 units up means to go 6 units along the positive direction on the y axis. For this reason, the new y coordinate will be 6 units more than the old one.


Similarly, going 3 units left means to decrease by 3 the x coordinate, because we're following the negative direction.


So, to recap, this transformation maps (x,y) \to (x-3, y+6)


This means that the two points become


A = (-1, 2) \implies A' ( -4,8),\qquad B = (1,5) \implies B' = (-2,11)

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The area of the hexagonal head using each persons (Andre & Lin) method is;

<u><em>Total Area using Lin's method = 93.6 ft²</em></u>

<u><em>Total Area using Andre's method = 93.6 ft²</em></u>

  • A) Lin's Method; From division of polygons , we know that a regular hexagon can be divided into 6 equilateral triangles.

From the image, a side of the hexagon is 6 inches. This means that all sides of each triangle will be also 6 inches.

Formula for area of a triangle = ¹/₂(base x height)

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Let us first find the area of the rectangle;

Area of rectangle = length × width

Area of rectangle = 10.4 × 6 = 62.4 ft²

For the rectangle, we know three sides now which are;

10.4 ft, 6 ft, 6 ft but we don't know the height and as such we will use heron's formula to get the area of one triangle;

A = √s((s - a)(s - b)(s - c))

where; a,b and c are the 3 sides of the triangle

s = (a + b + c)/2

Thus; s = (10.4 + 6 + 6)/2 = 11.2 ft

Thus;

A = √11.2((11.2 - 10.4)(11.2 - 6)(11.2 - 6))

A = 15.6 ft²

There are 2 triangles and so Area of 2 triangles =2 × 15.6 = 31.2 ft²

Thus;

Total Area = 62.4 ft² + 31.2 ft²

Total Area = 93.6 ft²

Read more at; brainly.com/question/15424654

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