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maaeda
07.11.2019 •
Mathematics
What is the area of this rectangle?
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Ответ:
The answer to your question is: 40u²
Step-by-step explanation:
Data
Find the vertex
A (-4, 0)
B (-6, 4)
C (2, 8)
D (4, 4)
Formula
d =![\sqrt{(x2 - x1)^{2} + (y2 - y1)^{2} }](/tpl/images/0364/4808/450d2.png)
Area = base x height
Process
1.- Find the distance from A to B, and the distance from A to D
2.- Obtan the area of the rectangle
1.-
dAB =![\sqrt{(-6 + 4)^{2} + (4 - 0)^{2} }](/tpl/images/0364/4808/95a42.png)
dAB =![\sqrt{2^{2} + 4^{2} }](/tpl/images/0364/4808/041a0.png)
dAB =![\sqrt{4 + 16}](/tpl/images/0364/4808/3e492.png)
dAB =![\sqrt{20}](/tpl/images/0364/4808/2ca86.png)
dAD =![\sqrt{(4 + 4)^{2} + (4 - 0)^{2} }](/tpl/images/0364/4808/74d50.png)
dAD =![\sqrt{8^{2} + 4^{2} }](/tpl/images/0364/4808/d2c55.png)
dAD =![\sqrt{64 + 16}](/tpl/images/0364/4808/a3acb.png)
dAD =![\sqrt{80}](/tpl/images/0364/4808/8a8a6.png)
2.-
Area =![\sqrt{20} x \sqrt{80}](/tpl/images/0364/4808/b206a.png)
Area =![\sqrt{20x80}](/tpl/images/0364/4808/14ba5.png)
Area =![\sqrt{1600}](/tpl/images/0364/4808/ccf5e.png)
Area = 40u²
Ответ:
i need help on this question too
Step-by-step explanation: